Doctor Who
I LOVE Dr Who. Its the Greatest Show EVER! (It even beats Star Trek.)
As a Time Lord, the Doctor has the ability to regenerate his body when near death. Introduced into the storyline as a way of
continuing the series when the writers were faced with the departure of lead actor William Hartnell in 1966, it has continued to
be a major element of the series, allowing for the recasting of the lead actor when the need arises. The serials The Deadly
incarnations. However at least one Time Lord - the Master - managed to circumvent this (in The Keeper of Traken).

The Doctor has fully gone through this process and its resulting after-effects on ten occasions, with each of his incarnations
having their own quirks and abilities but otherwise sharing the consciousness, memories, experience and basic personality of
the previous incarnations.
Doctor Who is a British science fiction television program produced by the BBC.
The program depicts the adventures of a time-travelling humanoid alien known as
the Doctor who explores the universe in a sentient time machine called the
TARDIS, whose exterior appears as a blue police box. Along with a succession
of companions, he faces a variety of foes while working to save civilisations, help
people, and right wrongs. (Plus the Runnings fun! They Love the Running.)

The programme is listed in Guinness World Records as the longest-running
science fiction television show in the world (running more than 30 season and 750
episodes (Take That Star Trek!), and as the "most successful" science fiction
series of all time, in terms of its overall broadcast ratings, DVD and book sales, iTunes traffic, and "illegal downloads". It
has been recognised for its imaginative stories, creative low-budget special effects during its original run, and pioneering use
of electronic music (originally produced by the BBC Radiophonic Workshop). The show is a significant part of British
popular culture in the United Kingdom, and elsewhere it has become a cult television favourite. The show has influenced
generations of British television professionals, many of whom grew up watching the series.

The programme originally ran from 1963 to 1989. After an unsuccessful attempt to revive regular production with a back
door pilot in the form of a 1996 television film, the program was relaunched in 2005, produced in-house by BBC Wales in
Cardiff. The first series was produced by the BBC; series two and three had some development money contributed by the
Canadian Broadcasting Corporation (CBC), which was credited as a co-producer. Doctor Who also spawned spin-offs in
multiple media, including Torchwood, The Sarah Jane Adventures, K-9, and a single pilot episode of K-9 and Company in
1981.
The Doctor
The story is about a man who calls himself "The Doctor". The Doctor is a Time Lord, an extraterrestrial from the planet
Gallifrey, who travels through time and space in an internally vast time machine called the TARDIS ("Time And Relative
Dimension In Space"). Because of an error in its chameleon circuit, the outside of the TARDIS always looks like a
1960s-style British police box (similar to a blue telephone box). The Doctor explores the universe at random, using his
extensive knowledge of science, technology and history (from his perspective) to avert whatever crisis he encounters unless
it is a fixed point in time and space. The imprecise nature of his travels is initially attributed to the age and unreliability of the
TARDIS's navigation system. However, the 1969 serial The War Games reveals that the Doctor actually stole the
TARDIS, and subsequent stories such as Planet of the Dead, The Big Bang and The Doctor's Wife have incorporated
this. He was presumably unfamiliar with its systems but was able to operate it correctly until his exile when the Time Lords
wiped it from his memory. The Doctor initially had the manual for operating the TARDIS but destroyed it because he
"disagreed with it". After his trial and exile to twentieth century Earth, the Doctor still visits other planets on missions from
the Time Lords who pilot the TARDIS to precise locations for him. After his exile is lifted, the Doctor returns to his travels
and demonstrates the ability to reach a destination of his own choosing more often than not. In the 2011 episode "The
Doctor's Wife", the Doctor tells the TARDIS (whose matrix, or soul, was temporarily transferred to the character Idris)
that she has never been very reliable in taking him where he wanted to go. The TARDIS explains that she always took the
Doctor where he needed to be. In "Journey's End", the Doctor states that the reason for the previous bumpy navigation
was that the TARDIS is meant to have six pilots, but in "The Time of Angels" River Song demonstrates superior piloting
skills and says the Doctor pilots the TARDIS "with the brakes on" (hence the classic noise).

The Doctor generally travels with one or more companions. Most of these make a conscious decision to travel with him,
but others, especially early in the series, are accidental passengers or kidnap victims. At first he traveled only with his
granddaughter Susan Foreman. Later the Doctor took other people with him, who are usually called "companions" or
"assistants". The Doctor and his companions travel through space and time, have a lot of adventures, and often save many
people.
The First Doctor was played by William Hartnell from 1963 to1966
At the inception of the series the Doctor was a mysterious character and little was known about
him except that he had a granddaughter, Susan Foreman, and that they were from another time and
another world. He had a time machine, the TARDIS, which was disguised as a police box and was
bigger on the inside than on the outside. He and Susan were in exile as well, for unspecified
reasons. The name of the Doctors people nor his home planet was ever revealed during this
incarnation.

He was abrasive, patronising, and cantankerous towards his human travelling companions, yet
shared a deep emotional bond with his granddaughter Susan. He also harboured a streak of
ruthlessness, being willing to lie – and in one case attempt to kill – to achieve his goals.

The series began with schoolteachers Ian Chesterton and Barbara Wright investigating the mystery of Susan, a student who
appeared to possess scientific and historical knowledge far beyond her years. Discovering the TARDIS in a scrapyard, they
were involuntarily taken by the Doctor on a journey back to the year 100,000 BC, and spent two years adventuring through
time and space with the Doctor.

It was during this incarnation that the Doctor first met the Daleks and the Cybermen, races that would become his most
implacable foes. The TARDIS crew also observed many historical events such as the Reign of Terror in revolutionary
France, meeting Marco Polo in China and The Aztecs in Mexico. When Susan fell in love with the human resistance fighter
David Campbell, the Doctor left her behind to allow her to build a life for herself on 22nd century Earth (The Dalek Invasion
of Earth), although he promised to return someday. The TARDIS crew were soon joined by Vicki, whom they rescued from
the planet Dido.

At the conclusion of a chase through time, Ian and Barbara used a Dalek time machine to go home (The Chase), and their
place in the TARDIS was taken by a space pilot named Steven Taylor. Together, they met another member of the Doctor's
race for the first time in the form of the Meddling Monk and had an adventure in Galaxy 4. During the siege of Troy, Vicki
decided to leave the TARDIS to stay with Troilus. The Doctor and Steven were next briefly joined by Katarina and Sara
Kingdom, but both were killed during the events of The Daleks' Master Plan.

After narrowly missing the Massacre of St Bartholomew's Eve, the Doctor and Steven took on board a young girl named
Dodo Chaplet. Dodo brought a cold virus to the far future, which nearly annihilated the humans and Monoids travelling on
The Ark. One of the First Doctor's most deadly foes was the Celestial Toymaker, who forced him and his companions to
play deadly games. Eventually, the Doctor managed to win the Trilogic Game allowing them all to escape the Toymaker's
domain.

Eventually, Steven and Dodo left the Doctor as well, Steven remaining on an alien planet as a mediator (The Savages), and
Dodo deciding to remain on Earth in 1966. The Doctor was then joined by Polly and Ben Jackson who would witness his
first regeneration.

The toll of years put strain on the Doctor's elderly frame. After defeating the Cybermen at the Antarctic Snowcap Station
(The Tenth Planet), the Doctor collapsed inside the TARDIS, and before the astonished eyes of his then-companions Ben
and Polly, his cells renewed themselves for the first time, giving him a completely new physical appearance and character –
the Second Doctor.
The Second Doctor was played by Patrick Troughton from 1966 to 1969
The First Doctor grew progressively weaker while battling the Cybermen during the events of The
Tenth Planet and eventually collapsed, seemingly from old age. His body renewed itself and
transformed into the Second Doctor.

Initially, the relationship between the Second Doctor and his predecessor was unclear. In his first
story, the Second Doctor referred to his predecessor in the third person as if he were a
completely different person. His companions Ben and Polly are at first unsure how to treat him
and it is only when a Dalek recognises him that they accept that he's the Doctor.

In the second story, The Highlanders, Jamie McCrimmon joined the TARDIS crew, and
remained with the Second Doctor for the rest of his travels. Ben and Polly left together when the TARDIS landed at Gatwick
Airport on the same day they originally left with the First Doctor. The Doctor and Jamie then became involved in a plot by
the Daleks to gain both the "Human and Dalek Factors", which led to them meeting Victoria Waterfield in the 19th century.
The Doctor used the situation to engineer a Dalek civil war that seemingly destroyed the Daleks forever. However, Victoria's
father was among the casualties. Now an orphan, Victoria chose to accompany the Doctor and Jamie on their travels.
Although she felt great affection for the Doctor and Jamie, she was never able to completely come to terms with life in the
TARDIS and the constant danger that resulted. She eventually chose to leave after the events of Fury from the Deep. The
Doctor was then joined by Zoe Heriot, an extremely intelligent (if overly dependent on logic) woman from the 21st century,
who helped defeat the Cybermen attack on a space station known as the Wheel. She then stowed away in the TARDIS and,
despite the Doctor's warnings about what she might encounter, chose to remain.

During his second incarnation, the Doctor confronted familiar foes such as the Daleks and the Cybermen, as well as new
enemies such as the Great Intelligence and the Ice Warriors. It was during this time that he first met Alistair Gordon
Lethbridge-Stewart, in the tunnels of the London Underground. Following the defeat of the Great Intelligence,
Lethbridge-Stewart was promoted to Brigadier and became the leader of the British contingent of UNIT, a military
organisation tasked to investigate and defend the world from extraterrestrial threats. The Doctor reteamed with him to defeat
an invasion of Cybermen in league with industrialist Tobias Vaughan.

The Second Doctor's time came to an end when the TARDIS landed in the middle of a warzone, created by a race of alien
warlords who progressively brainwashed kidnapped humans into becoming soldiers for them. Although the Doctor was able
to defeat their plan, he realised he would be unable to return the human subjects to their various original points in Earth's
history. He therefore contacted the Time Lords, sacrificing his own freedom in the process. He was then put on trial by the
Time Lords, for breaking their laws of non-interference. Despite the Doctor's argument that the Time Lords should use their
great powers to help others, he was sentenced to exile on 20th century Earth, the Time Lords forcing his regeneration into
the Third Doctor in the process. Jamie and Zoe were returned to their own time, with their memories of all but their first
encounter with the Doctor wiped and the secret of the TARDIS was also taken from the Doctor.
The Third Doctor was played by Jon Pertwee from 1970 to 1974
The Third Doctor was a suave, dapper, technologically-oriented, and authoritative man of action,
who not only practised Venusian Aikido (or Karate), but enjoyed working on gadgets and riding
all manner of vehicles, such as the Whomobile and his pride and joy, the canary-yellow vintage
roadster nicknamed "Bessie," a construct which featured such modifications as a remote control,
dramatically increased speed capabilities and even inertial dampeners.

While this incarnation spent most of his time exiled on Earth, where he grudgingly worked as
UNIT's scientific advisor, he would occasionally be sent on covert missions by the Time Lords,
where he would often act as a reluctant mediator. Even though he developed a fondness for
Earthlings with whom he worked (such as Liz Shaw and Jo Grant), he would jump at any chance
to return to the stars with the enthusiasm of a far younger man than himself (as can be seen in his frivolous attitude in The
Mutants). If this Doctor had a somewhat patrician and authoritarian air, he was just as quick to criticise authority, too, having
little patience with self-inflated bureaucrats, parochially-narrow ministers, knee-jerk militarists or red tape in general. His
courageousness could easily turn to waspish indignation; it is thus no surprise that a common catchphrase of his was, "Now
listen to me!"

Despite his now-and-then arrogance, the Third Doctor genuinely cared for his companions in a paternal fashion, and even
held a thinly-veiled but grudging admiration for his nemesis, the Master, and for UNIT's leader, Brigadier Lethbridge-
Stewart, with whom he eventually became friends. In fact, even when his much-resented exile was lifted, the highly-moral
and dashing Third Doctor continued to help UNIT protect the Earth from all manner of alien threats.

In general, this incarnation of the Doctor was more physically daring than the previous two, and was the first to confront an
enemy physically if cornered (both of his previous incarnations would nearly always attempt to dodge, flee or negotiate rather
than attack). This often took the form of quick strikes, with the occasional joint lock or throw—usually enough to get himself
and anyone accompanying him out of immediate danger, but usually not to the extent of a brawl, in keeping with the Doctor's
non-violent nature. He would only use his fighting skills if he had no alternative, and even then generally disarmed his
opponents rather than knock them unconscious. Indeed, his martial prowess was such that a single, sudden strike was usually
enough to halt whatever threatened him, and at one point he reminded Captain Yates (physically as well as verbally) that
Yates would have a difficult time removing him from somewhere when he did not want to be removed (The Mind of Evil).

Perhaps due to his time spent on Earth, or maybe just as a function of his pacifistic and authoritative tendencies, the Third
Doctor was a skilled diplomat (keeping talks going in The Curse of Peladon, for example) and linguist, as well as having an
odd knack for disguises; all of this, combined with his formidable galactic experience, often allowed the Third Doctor to play
a central role in the events in which he found himself.
The Fourth Doctor was played by Tom Baker from 1974 to 1981
The Fourth Doctor appeared in 172 episodes (180, counting his regenerations scenes and the
aborted "Shada") over a seven-year period, from 1974 to 1981. This makes him the longest
running on-screen Doctor of both series. This incarnation is generally regarded as the most
recognisable of the Doctors and one of the most popular, especially in the United States.

In his new incarnation, the Doctor is eager to leave Earth in favour of exploration, thus drawing
back from continuous involvement with UNIT (with which he had worked closely as the Third
Doctor). He has also grown tired of working for the Time Lords. Despite attempts to avoid them
altogether, the Time Lords continue to send him on occasional missions, including an attempt to
prevent the creation of the Daleks (Genesis of the Daleks), during which he also meets a new adversary, Davros. The
Doctor travels with journalist Sarah Jane Smith, whom he had befriended prior to his regeneration, and, for a time, with
UNIT Surgeon-Lieutenant Harry Sullivan.

After a battle with Zygons in Scotland, Harry (having just spent an entire season with the Doctor as they tried to get back to
the TARDIS) decided that taking the train was safer than the TARDIS, which the Doctor and Sarah chose to try and make
an appointment in London. Instead they ended up on the planet Zeta Minor (Planet of Evil), located at the far edge of the
known universe. From this point on the Doctor and Sarah travelled alone.

The Doctor's companionship with Sarah Jane came to an end when he received a telepathic summons to Gallifrey, as
humans were not then allowed on the planet. The summons turns out to be part of a trap set by his enemy the Master. The
renegade Time Lord has used up all his regenerations and has degenerated into little more than a withered skeletal husk.
The Doctor is framed for the assassination of the President of the High Council of Time Lords and put on trial. In order to
avoid execution (by vaporisation), the Doctor invokes an obscure law and declares himself a candidate for the office, giving
himself the time he needs to prove his innocence and expose the real culprit. This ultimately results in a climactic battle with
the Master (The Deadly Assassin).

The Doctor is seen to travel alone for the first time since season 1, returning to a planet he had visited centuries before.
During his previous visit, he had accidentally imprinted his own mind on a human colony ship's powerful computer, Xoanon,
leaving it with multiple personalities. On his second visit the Doctor is now remembered as an evil god by the descendants
of the colonists, some of whom had become a warrior tribe called the Sevateem. After the Doctor cures the computer, one
of the Sevateem, Leela, joins him on his travels (The Face of Evil). The Doctor brings the intelligent but uneducated Leela to
many locales in human history, teaching her about science and her own species' past. In Victorian London, the pair
encounters the magician Li Hsien Chang and his master, the self-styled Weng-Chiang (The Talons of Weng-Chiang). Weng-
Chiang is revealed to be a time-jumping criminal from the Earth's distant future.

Later, the Doctor and Leela visit the Bi-Al Foundation medical centre, where they acquire the robot dog K-9 (The Invisible
Enemy). While K-9 is malfunctioning, a time distortion leads the TARDIS back to contemporary rural England. While
investigating the distortion, he and Leela are confronted by an ancient being that feeds on death from Time Lord history,
called the Fendahl (Image of the Fendahl). Eventually, the Doctor returns to Gallifrey and declares himself Lord President,
based on the election held during his previous visit. This is in fact a ploy to reveal and defeat a Sontaran invasion plan. In the
aftermath Leela and K-9 decide to remain on Gallifrey. The Doctor comforts himself by producing K-9 Mark II (The
Invasion of Time).

Shortly afterward, the powerful White Guardian assigns the Doctor the task of finding the six segments of the Key to Time,
sending a young Time Lady named Romana to assist him. The two Gallifreyans travel to a variety of planets, encountering
strange and unusual allies and enemies, gathering the six segments and defeat the equally powerful Black Guardian- who
sought the Key for himself. After the conclusion of the quest, Romana regenerates into a new form (Destiny of the Daleks).

In an effort to evade the Black Guardian, the Doctor installs a "Randomizer" in the TARDIS so that not even the Black
Guardian can anticipate where they go. Ironically, the first place the Randomizer sends them is the home planet of the
Daleks, Skaro (Destiny of the Daleks). Perhaps because of this, the Doctor begins frequently overriding the machine- first
travelling to Paris for a holiday, only to get caught up in an alien scheme to steal the Mona Lisa (The City of Death). He
eventually discards the device altogether, remarking that he's fed up with not knowing where he's going.

Shortly after this, the Fourth Doctor and Romana are projected outside the known universe and into a universe of negative
coordinates, known as Exo-Space. The TARDIS lands on a planet called Alzerius (Full Circle), where they are joined by a
young prodigy named Adric. It's in E-Space that the Doctor destroys the last of a race of giant Vampires who had once
threatened all life in his universe. Eventually, the Doctor and his two companions find themselves in a white void with no
coordinates- a sort of membrane between the two universes. A way out soon forms, but Romana and K-9 chose to remain
behind to help free a race of enslaved creatures in E-Space (Warriors' Gate).

The Doctor and Adric have only just made it back when they're asked to help the people of Traken from a creature known
as "Melkur." On Traken, Adric and the Doctor are introduced to the aristocratic Nyssa of Traken. Both Nyssa and her
father, Tremas, assist the Doctor in stopping Melkur- who is in fact revealed to be another TARDIS that is controlled by
the Master. The Master is narrowly defeated, but managed to take over Tremas' body- thus giving himself a new
incarnation.

The Doctor decides to travel to Earth to scan a real Police Box as part of a plan to repair the "Chameleon Circuit"- the
shape-changing mechanism in the TARDIS. However, the Doctor soon spots a mysterious ghostly figure looking at him in
the distance. He eventually confronts the figure, who warns him of future dangers.

As the Doctor prepares to travel to the planet Logopolis to get the Chameleon Circuit fixed, Tegan Jovanka appears in the
console room (having previously gotten lost in the corridors of the TARDIS). The conduit between E-Space and our own
universe is revealed to be a Charged Vacuum Emboitment (CVE) – created by the mathematicians of Logopolis as part of
a system to allow the Universe to continue on past its point of heat death. Nyssa shows up, explaining that she was brought
to Logopolis by the same figure that the Doctor encountered. Logopolis soon falls under the Master's control, but the stasis
field he is generating ends up releasing Entropy and eroding matter throughout the universe- threatening to destroy the entire
universe!

The Master agrees to help the Doctor stop the spread of Entropy by adapting the Pharos Project radio telescope on Earth
so that they are able to reopen the CVEs. However, when the Master tries to take control of it, the Doctor runs out under
the upturned radio dish to sever the cable linking the Master to the CVEs. The Master makes the dish start rotating so that
the Doctor will fall to his death. Before he falls, he manages to tear out the cable, only to leave his companions watching as
he clings to the cable. As his grip begins to slip, he sees visions of all the enemies he's faced over the years, then falls. Adric,
Nyssa, and Tegan gather around the mortally wounded Doctor and call out his name. The Doctor begins seeing visions of
all his companions and even the Brigadier calling his name.

He then looks up at the three of them and utters his last words: "It's the end-- but the moment has been prepared for..." He
then motions to the white-clad figure of the Watcher, who begins approaching the Doctor. The Watcher, a manifestation of
the Doctor's future incarnation, merges with the Doctor and triggers his regeneration. "So he was the Doctor all the time?"
remarks Nyssa, as the three watch him transform into the Fifth Doctor.

To an extent, the Fourth Doctor is the most unpredictable in terms of his emotional depth, slightly more distant and Alien
than his other incarnations - before or after.

Despite his obvious moments of whimsical charm, offbeat humor, permeated by his manic grin, the Fourth Doctor is more
aloof and somber than his previous incarnations. He could become intensely brooding, serious and even callous. He also
displays a darker edge to his personality and in The Invasion of Time he seems to cruelly taunt and play with the Time
Lords, after his emergency inauguration as President. He also has a strong moral code, such as when he faces the dilemma
of whether to destroy the Daleks in (Genesis of the Daleks) stating that if he did, he would be no better than the Daleks
himself. He is truely appalled at the actions of the Pirate Captain in The Pirate Planet and refuses to listen to Professor
Tryst's attempts to justify drug-running in order to fund his scientific work (Nightmare of Eden), simply telling him to go
away.

At the same time he is capable of moments of genuine warmth. In The Ark in Space, he salutes the human race's
indomitablity and latter stories establish that Earth is his favourite planet (The Ribos Operation). He is the first Doctor to
refer to his companions as his best friends.

To his companions, especially Sarah Jane Smith, he was protective and somewhat of a fathering figure. In stories such as
Pyramids of Mars he is concerned that he is approaching middle age with almost melancholic weariness, something which
becomes the main focus of his personality in his final season. He often contemplates his outsider status to both humanity and
his Galifreyian heritage, as he seems more inclined toward a solitary existence (The Deadly Assassin). In contrast to this
"outsider existence" he emphasises that he found mankind to be his "favourite species" as if he was scientifically studying it.
He could also be furious with those he saw as stupid, frivolous, misguided or just plain evil. When taking charge, he could
be considered authoritative to the point of controlling and egocentric. He generally maintained his distance from the Time
Lords, remarking in The Pyramids of Mars that, while being from Gallifrey, he doesn't consider himself a Time Lord. He
clearly resents that even after they had lifted his exile, they continue to beckon the Doctor whenever they deemed it
necessary (Genesis of the Daleks). .

Although like all his other incarnations he preferred brain over brawn, he is a capable swordsman (The Androids of Tara)
and fighter when needs dictate, following on from the martial expertise of his immediate predecessor. He improvises non-
lethal weaponry when necessary (Genesis of the Daleks), but was also not averse to more lethal weaponry as a necessity
against both sentient and non-sentient beings, like the matter-destroying DeMat Gun (The Invasion of Time) or
contemporary firearms (Image of the Fendahl and The Talons of Weng-Chiang).

One of the Doctor's most significant relationships occurs during his fourth incarnation and is explored further in his tenth
incarnation. His friendship with Sarah Jane Smith is implied to be deeper than the relationships he shared with other
companions to that point (as alluded to in the Tenth Doctor episode School Reunion). She is consequently still profoundly
affected by their separation many years later in her personal time line.
The Fifth Doctor was played by Peter Davison from 1981 to 1984
freighter from crashing into prehistoric Earth (Earthshock).

Following Adric's death, the TARDIS accidentally arrived at Heathrow airport (Timeflight). Here the Doctor and Nyssa
left Tegan assuming she would want to stay (when in fact she didn't any more). The Doctor and Nyssa then travelled
together for an unspecified amount of time before the renegade Time Lord Omega, attempting to return to our universe,
temporaly bonded himself to the Doctor (Arc of Infinity). Faced with this threat, the Time Lords were forced to attempt
executing the Doctor, but he eventually tracked Omega to Amsterdam where he defeated him and re-encountered Tegan
(who having now lost her job, had no second thoughts about rejoining the TARDIS crew).

When the Doctor met a new companion, an alien boy stranded on Earth by the name of Vislor Turlough, he did not know
that Turlough had been commissioned by the Black Guardian to kill him. Soon after, Nyssa left to help cure Lazar's
Disease on the space station Terminus. After meeting the entities known as Eternals racing in yacht-like spacecraft for the
prize of "Enlightenment", Turlough broke free from the Black Guardian's influence, and continued to travel with the Doctor
and Tegan. Landing in the reign of King John, the crew again encountered The Master, who was using a shape-shifting
robot Kamelion to impersonate the King. However, the Doctor helped Kamelion to regain his free will and the robot
joined him in his travels (although he rarely left the TARDIS). The Doctor met three of his previous incarnations when they
were summoned to the Death Zone on Gallifrey by President Borusa, who was attempting to gain Rassilon's secret of
immortality.

After further adventures in which the Doctor re-encountered old foes, including the Silurians and the Sea Devils, both
Tegan and Turlough left the TARDIS. Tegan would find the death and violence they encountered on their travels too much
to bear (Resurrection of the Daleks), and Turlough returned to his home planet of Trion in the company of his younger
brother, as well as other exiles of Trion, from the planet Sarn. The Doctor was eventually forced to destroy Kamelion,
when the Master used his mental connection to the robot to regain control of him, a process the robot realised was
irreversible (Planet of Fire).

Ultimately, the Fifth Doctor and his last companion Peri Brown were exposed to the drug spectrox in its deadly toxic raw
form on Androzani Minor. With only one dose of the antidote available, he nobly sacrificed his own existence to save Peri,
regenerating into the Sixth Doctor, expressing doubt for the first time that regeneration might be possible.

A sketch of the Fifth Doctor is seen in John Smith's book in the new series episode "Human Nature" (2007). Visions of
the Fifth Doctor (alongside other past Doctors) appear in "The Next Doctor" (2008) and "The Eleventh Hour" (2010).

Somewhere in his life (perhaps set after the events of Snakedance) he crashed his TARDIS into the TARDIS of the Tenth
Doctor and consequently nearly opened a "Belgium sized" black hole because of the paradox caused, which the Tenth
Doctor also uses to explain the notably aged appearance of his former self. However the Tenth Doctor, remembering the
event, knew how to stop it because he recalled watching himself correct the mistake when he was the Fifth Doctor. ("Time
Crash")
The Fourth Doctor's regeneration into the Fifth was a problematic one, and nearly failed, with
the Doctor briefly taking on personality aspects from his four previous incarnations. After
recovering in the fictional city Castrovalva (actually an elaborate trap created by his arch-enemy
The Master), he continued his travels with Tegan Jovanka, Nyssa and Adric. Initially his travels
centred on getting Tegan back to Heathrow Airport in time for her first day as an airhostess, but
the TARDIS repeatedly missed this destination and Tegan eventually decided to stay in the
TARDIS. After trips to the future and the past encountering villains such as Monarch and the
Mara, the Fifth Doctor was confronted with tragedy when Adric died trying to stop a space
The Sixth Doctor was played by Colin Baker from 1984 to 1986
came to his senses. Realising what he had nearly done, he initially considered going into a The
Sixth Doctor's regeneration was initially unstable, and he nearly strangled Peri before he
hermitlike existence on the planet Titan 3, only to be caught up in events on the planet Jocanda,
after which he resumed his travels (The Twin Dilemma). He encountered many old foes
including the Master, Daleks, Cybermen and Sontarans, and even shared an adventure with his
own second incarnation. He also faced a renegade female Time Lord scientist, the Rani, who
was conducting experiments on humans using the Luddite Riots as a cover.

Later, the Doctor and Peri landed on the devastated planet Ravolox, which they discovered
was actually Earth, moved across space with devastating consequences. Before they could discover the reason for this
disaster, the TARDIS landed on Thoros Beta. What actually happened here is still unclear, but initial accounts suggest that
Peri was killed after being cruelly used as a test subject in brain transplant experiments and the Doctor was pulled out of
time to a Time Lord space station where he was put on trial for the second time by his own race, the Time Lords. In
reality the trial was a cover-up organised by the High Council. A race from Andromeda had stolen Time Lord secrets and
hidden on Earth, so in order to protect themselves the Time Lords had moved Earth through space, burning the surface in
a massive fireball and leaving it as Ravolox. The prosecutor at that trial, the Valeyard, turned out to be a possible future,
an evil incarnation of the Doctor himself who was out to steal his remaining lives. He had also edited the Matrix recordings
of the Doctor's travels; in reality Peri had survived events on Thoros Beta. The events of the trial tangled the Doctor's
timeline slightly, as he left in the company of Mel, whom he technically had not yet met. (Originally this was the
then-producer's idea that in the following season this would be explained).

Events following the trial are not covered in the television series, but are covered in various spin-off media, though their
canonicity is unclear. The Virgin Missing Adventures novel Time of Your Life states that the Doctor went into a
self-imposed exile to avoid becoming the Valeyard. He was lured back into travelling, ironically by the Time Lords, and
recruited Grant Markham as a companion. Although now travelling again, he still attempted to avoid meeting Mel and
recruited other companions such as history lecturer Evelyn Smythe and Charley Pollard. He eventually does encounter
Mel by accident during the events of the BBC Books novel Business Unusual and accepts his fate once she stows away in
the TARDIS.

When the TARDIS was attacked by his old enemy the Rani, the Sixth Doctor was somehow injured and regenerated into
the Seventh Doctor; the exact cause of the regeneration, however, has never been revealed on-screen. When writers Pip
and Jane Baker's novel of the story tried to explain the regeneration many were not happy with the outcome. There have
subsequently been various explanations for the regeneration. The Virgin New Adventures series suggests that the Seventh
Doctor somehow killed the Sixth, because he could not become the master planner and manipulator that his next
incarnation became, due to his fear of becoming the Valeyard. The BBC Books novel Spiral Scratch offers an alternative
explanation that the Sixth Doctor died as a result of his chronal energy being drained in a confrontation with a powerful
pan-dimensional entity before being snared by the Rani's beam.

The Sixth Doctor is the first incarnation of the Doctor for which an estimate of length of his tenure can be extrapolated
from the dialogue of the television series. In Revelation of the Daleks, he states that he is 900 years old; in Time and the
Rani, the Seventh Doctor, having regenerated from the Sixth only hours earlier, states that his exact age is 953, indicating
(presuming the Sixth Doctor gave his real age earlier) that 53 years had passed (for the Doctor) between Revelation of the
Daleks and his regeneration (the exact length of time between The Twin Dilemma and Revelation of the Daleks, however,
is not indicated). Given the convoluted circumstances surrounding Trial of a Time Lord, a suitable gap does exist for this.
When the series returned in 2005, however, the Ninth Doctor also claimed an age of 900 years, seemingly contradicting
the earlier claim by the Seventh Doctor. It should be noted, however, that the Doctor has been shown to lie about his age.
The Seventh Doctor was played by Sylvester McCoy from 1987 to 1989 and 1996
When the TARDIS was attacked by the Rani, the Sixth Doctor was injured and forced to
regenerate. After a brief period of post-regenerative confusion and amnesia (chemically induced
by the Rani), the Seventh Doctor thwarted the Rani's plans, and rejoined his companion Mel for
whimsical adventures in an odd tower block and a Welsh holiday camp in the 1950s.

On the planet Svartos, Mel decided to leave the Doctor's company for that of intergalactic
rogue Sabalom Glitz. Also at this time, the Doctor was joined by time-stranded teenager Ace.
Although he did not mention it at the time, the Doctor soon recognised that an old enemy from a
past adventure, the ancient entity known as Fenric, was responsible for the Time Storm which
transported Ace from 1980s Perivale to Svartos in the distant future. Growing more secretive and driven from this point
on, the Doctor took Ace under his wing and began teaching her about the universe, all the while keeping an eye out for
Fenric's plot. The Doctor began taking a more scheming and proactive approach to defeating evil, using the Gallifreyan
stellar manipulator named the Hand of Omega as part of an elaborate trap for the Daleks which resulted in the destruction
of their home planet, Skaro. Soon afterwards, the Doctor used a similar tactic and another Time Lord relic to destroy a
Cyberman fleet. He engineered the fall of the oppressive government of a future human colony in a single night and
encountered the Gods of Ragnarok at a circus on the planet Segonax, whom he had apparently fought throughout time.
Later, he was reunited with his old friend, Brigadier Lethbridge-Stewart while battling the forces of an alternate dimension
on Earth.

The Seventh Doctor's manipulations were not reserved for his enemies. With the goal of helping Ace confront her past, he
took her to a Victorian house in her home town of Perivale in 1883 which she had burned down in 1983. Eventually, the
Doctor confronted and defeated Fenric at a British naval base during World War II, revealing Fenric's part in Ace's
history. The Doctor continued to act as Ace's mentor, returning her to Perivale; however, she chose to continue travelling
with him. The circumstances of her parting from the Doctor were not shown on television.

Near the end of his incarnation, the Seventh Doctor was given the responsibility of transporting the remains of his former
enemy the Master from Skaro to Gallifrey. This proved to be a huge mistake; despite having a limited physical form, the
Master was able to take control of the Doctor's TARDIS and cause it to land in 1999 San Francisco, where the Doctor
was shot in the middle of a gang shoot-out. He was taken to a hospital, where surgeons removed the bullets but mistook
the Doctor's double heartbeat for fibrillation; their attempt to save his life instead caused the Doctor to "die" with one last
shocking scream. Perhaps due to the anaesthesia, the Doctor did not regenerate immediately after death, unlike all
previous occasions; he finally did so several hours later, while lying in the hospital's morgue.

In Time and the Rani the Seventh Doctor gives his age soon after his regeneration as "exactly" 953 years, indicating that
some two centuries of subjective time has passed since his fourth incarnation was revealed to be 759 in The Ribos
Operation, and approximately half-a-century since Revelation of the Daleks in which the Sixth Doctor stated he was 900
years old. The later revival of the series, however, contradicts earlier episodes by establishing the Ninth Doctor as being
900 years old in Aliens of London, with the Tenth Doctor stating his exact age as 906 in The End of Time, and the
Eleventh Doctor stating his age as 909 in The Impossible Astronaut.

The Seventh Doctor era is noted for the cancellation of Doctor Who after 26 years.

The Seventh Doctor's final appearance on television was in the 1996 Doctor Who television movie, where he regenerated
into the Eighth Doctor, played by Paul McGann.
The Eighth Doctor was played by Paul McGann in 1996
The Eighth Doctor made his first television appearance in the 1996 Doctor Who television
movie, the first time the Doctor had returned to television screens since the end of the original
series in 1989. Intended as a backdoor pilot for a new television series on the Fox Network, the
movie managed to draw 5.5% of the US audience, according to Nielsen Ratings. In the UK, it
was received well, attracting over 9 million viewers and generally positive reviews. It was also
generally well received in Australia.

Although the movie failed to spark a new television series, the Eighth Doctor's adventures
continued in various licensed spin-off media, notably BBC Books' Eighth Doctor Adventures
novels, audio plays from Big Finish Productions, and the Doctor Who Magazine comic strip. As these stories spanned the
nine years between 1996 and the debut of the new television series in 2005, some consider the Eighth Doctor one of the
longest-serving of the Doctors. He is unarguably the longest-serving Doctor in the Doctor Who Magazine comic strip. In
the wake of the positive reaction to the revived television series in 2005, several of the Eighth Doctor's Big Finish audio
dramas were also broadcast on BBC7 radio in an edited form. The trailers for these broadcasts explained that these
adventures took place before the destruction of Gallifrey as described in the revived TV series. In 2007, BBC7 aired a
new series of Eighth Doctor audio adventures, created specifically for radio broadcast. Paul McGann has continued to
portray the Eighth Doctor in the various audio spinoffs.

The canonicity of the spin-off media with respect to the television series and to each other is open to interpretation (the
"Beginner's Guide to Doctor Who" on the BBC's classic Doctor Who website suggests this may be due to the Time
War). It has been suggested that the Eighth Doctor's adventures in three different forms (novels, audio, and comics) take
place in three separate continuities. The discontinuities were made explicit in the audio drama Zagreus. In response, it has
become increasingly common to consider the three ranges separately. The final Eighth Doctor Adventures novel, The
Gallifrey Chronicles, obliquely references this split in time lines, even suggesting that the split results in the three alternative
forms of the Ninth Doctor (a reference to the fact three different versions of the incarnation have appeared in various
media). Even so, all matters of canonicity remain typically unclear.


The Eighth Doctor encouraged those around him to seize life instead of withdrawing from it. He also seemed to enjoy
giving people hints of their own futures, probably to prod them into making the right decisions. It is unclear if the eighth
Doctor's knowledge of people's futures comes from historical expertise, psychic power or precognitive ability.

As with the Fifth Doctor, the debonair Eighth Doctor's youthful, wide-eyed enthusiasm actually hid a very old soul with
perhaps a darker side. In fact, whereas the Eighth Doctor of the audio plays (voiced by McGann) and the comic strip
hew closely to the television movie Doctor, the Eighth Doctor of the novels exhibited what was, at times, a much darker
personality, perhaps due to the rather traumatic adventures that he underwent.

The Eighth Doctor also attracted controversy in the television movie, breaking the long-standing taboo against romantic
involvement with his companions by kissing Grace Holloway. Fans were extremely divided on this. In the spin-off media
that followed, the Eighth Doctor has often been the object of romantic interest, but has shown little to no romantic
inclinations of his own.

Fans have also been divided on the Eighth Doctor revealing that he is apparently half-human on his mother's side.
However, "Journey's End", an episode of the revived television series, sees the Tenth Doctor accidentally creating a
half-human, physically identical second Doctor, and his reaction to the situation implies this is a new experience for him.
Also, in the episode The Doctor's Daughter, Jenny, who was created using a skin sample of the Tenth Doctor, is initially
dismissed by him since she is not a complete Time Lord, and according to him, "You're an echo, that's all. A Time Lord is
so much more. A sum of knowledge, a code, shared history, shared suffering".

In the comic storyline 'The Forgotten' it is revealed that the Doctor's claim that he was half human was in fact nothing
more than a ruse.

In all his iterations, the Eighth Doctor has proven extremely prone to bouts of amnesia, a tendency apparently inspired by
the plot of his sole television appearance. He also demonstrates, in his first and only televised appearance, a penchant for
sleight of hand. He manages to "lift" or pickpocket various items from certain people he meets during his first adventure.
The Ninth Doctor was played by Christopher Eccleston in 2005
The original Doctor Who television series ceased production in 1989 with the Seventh Doctor.
The Eighth Doctor, Paul McGann appeared in the role just once on screen in the Doctor Who
television movie in 1996. The appearance of the Ninth Doctor marked the regular return of the
character to television screens after nearly sixteen years, and as a result for many young fans and
new viewers he was the first Doctor they had ever seen. He was introduced without any
information on his recent past; though it is implied in "Rose" that he may have recently
regenerated - the Doctor looking in a mirror and commenting on his ears as though he hadn't
seen them before-, the exact circumstances of that change are unclear.
The Ninth Doctor is (to the best of his knowledge) the only survivor of the Time War. It is unspecified whether it was
this incarnation of the Doctor or the previous who fought in the war.

After his regeneration, he helped save London from an invasion by the Autons, living plastic automatons animated by
the Nestene Consciousness. He did this with the help of Rose Tyler, a teenager whom he subsequently invited to be a
companion in his travels. The Doctor showed Rose the far future and Victorian Britain (specifically Cardiff, where a
space-time rift was revealed to be situated) before returning to Rose's own era, where they fought off an attempt to
destroy the Earth by the alien Slitheen family. When they journeyed to Utah in 2012, the Doctor found that a single
Dalek was being kept in a secret museum filled with alien artefacts. There, the first details of the Time War fought by
the Time Lords and Daleks were revealed, and how it concluded with the mutual annihilation of both races, leaving the
Doctor the last of the Time Lords. A young man named Adam Mitchell travelled with them from Utah.

The Doctor, Rose, and Adam travelled to the future to Satellite 5, where they discovered a plot by the Jagrafess to
manipulate Earth through its mass media. When Adam tried to smuggle future knowledge back to his own time, he
became the first companion to be deliberately expelled from the TARDIS. After this, Rose persuaded the Doctor to
return to the day her father, Pete Tyler, died, creating a temporal paradox by saving him, which nearly led to disaster
until Pete sacrificed himself to set time right once more.

Following a mysterious spaceship to wartime London in 1941, the Doctor and Rose met Captain Jack Harkness, a
confidence trickster and former Time Agent from the 51st century. Jack's latest con nearly caused a deadly
nanotechnological plague to sweep through the human race, but he helped the Doctor and Rose end it prior to joining
the TARDIS crew.

Going back to Cardiff to refuel the TARDIS from the rift, the Doctor, Rose and Jack found that one of the Slitheen had
survived, posing as Margaret Blaine, the city's mayor. Blaine was exposed to the heart of the TARDIS, and was
regressed into an egg. It was during this episode that the Doctor first noticed that he and Rose had kept coming across
the words "Bad Wolf".

At some point, the Ninth Doctor had at least three unchronicled adventures, involving the sinking of the RMS Titanic,
the assassination of John F. Kennedy in 1963, and the eruption of Krakatoa in the 19th Century. These are revealed in
"Rose", but their placement in the Ninth Doctor's chronology remains unknown. In "The Unquiet Dead", he also
mentions that he "saw the Fall of Troy; World War Five [and] pushed boxes at the Boston Tea Party" but other than
the first instance, when he was the First Doctor, it is unclear whether these were in his personal timeline or that of his
past incarnations. He also shared an adventure with Jack and Rose in feudal Japan immediately prior to the events of
the penultimate episode, "Bad Wolf".

However, the first of these adventures may actually have taken place immediately after his regeneration, since he is
shown in a photo (taken in Southampton in 1912) to be wearing period clothes (Eccleston was dressed and shot
specially) which resemble those worn by the Eighth Doctor. The Ninth Doctor refuses to make any concessions to
contemporary fashion elsewhere in his travels (though he later insists that Rose dress appropriately for the Victorian
era), being very precise about his look, which is deliberately most unlike that worn by any previous incarnations. Also, it
is strongly implied that he saved the family pictured with him, by dissuading them from boarding the doomed ship – and,
one episode later, he reveals that he himself was on board, and ended up clinging to an iceberg.

When the Doctor and his companions became caught in a series of deadly versions of 20th Century game shows, they
found themselves at the mercy of the Bad Wolf Corporation, based on Satellite Five, but a full century after their last
visit. However, the true enemy was soon revealed to be the Daleks. The Dalek Emperor had survived the Time War,
and had rebuilt the Dalek race. The Doctor sent Rose back to her own time in the TARDIS, before attempting to
destroy the Dalek army. In doing so, he would have been forced to destroy a great part of the human race, which he
ultimately finds himself incapable of doing. Meanwhile, after seeing more "Bad Wolf" graffiti, Rose realised it was
somehow a message linking her to the events in the future.

Managing to open up the heart of the TARDIS, she absorbed the energies of the time vortex, and used it to destroy the
Daleks. In order to save Rose from being consumed from within by those energies, the Doctor absorbed the fatal
energy himself. However, the damage to his cells caused him to begin the regeneration process. Finally at peace with
himself, his last words are, "Rose, before I go I just wanna tell you – you were fantastic...absolutely fantastic...and
d'you know what? So was I!" Immediately thereafter he regenerates into the Tenth Doctor.
The Tenth Doctor was played by David Tennant from 2005 to 2010
The Ninth Doctor regenerates into the Tenth Doctor at the climax of the 2005 series finale,
"The Parting of the Ways"; he re-introduces himself to his companion Rose Tyler in an untitled
Children in Need mini-episode. In the Christmas Special, he is in a comatose state for most of
the episode, following his regeneration. After eventually waking up, he defeats the alien
Sycorax and saves Earth; in the process, he loses a hand, which regrows owing to his recent
regeneration. Amongst other 2006 series adventures, the Doctor and Rose save Queen
Victoria from a werewolf, resulting in the creation of the anti-alien Torchwood Institute. The
Doctor shares an adventure with two former companions, journalist Sarah Jane Smith and
robot dog K-9, before taking on Rose's boyfriend Mickey as a second assistant. The series
finale takes place in contemporary London, where modern-day Torchwood is the scene for war between the evil alien
Daleks and parallel-universe cyborgs the Cybermen; saving the Earth costs the Doctor Rose, who is stranded in a
parallel universe, along with Mickey and her mother, in "Doomsday".

In the closing scene of "Doomsday", a mysterious bride, miraculously appears in his TARDIS. The 2006 Christmas
Special sees the Doctor and bride-to-be Donna Noble save the Earth; Donna saves the Doctor from going too far in
his revenge against the alien Racnoss and declines his offer of companionship. In the 2007 series, the Doctor takes on
Martha Jones as his new companion. Together, they witness the mysterious Face of Boe prophesy to the Doctor that
"You Are Not Alone." They are rejoined by former companion Captain Jack Harkness in a three-episode adventure
where thought-deceased archenemy and fellow Time Lord the Master becomes Prime Minister of the United Kingdom
and enslaves the Doctor for one year. Martha's plan sees the Doctor infused with the world's psychic energies, and he
easily defeats the Master, who seemingly refuses to regenerate and dies in the Doctor's arms. Following this adventure,
in the dénouement of series finale "Last of the Time Lords", Jack and Martha both depart the TARDIS, and the Doctor
is shocked to see what appears to be the RMS Titanic crash into it. Set moments prior, another Children in Need
mini-episode, "Time Crash", features a brief encounter between the Tenth Doctor and the Fifth Doctor, containing
meta-humour surrounding Davison's Doctor having been a young David Tennant's favourite.

The 2007 Christmas Special sees the Doctor and a waitress, Astrid, save the Earth from the impending crash of the
starship Titanic; Astrid dies heroically, and the Doctor encounters Wilfred Mott for the first time. In the 2008 series
première episode, the Doctor is reunited with Donna Noble, Mott's granddaughter, who becomes his regular
companion. In "Planet of the Ood", the alien Ood prophesy the Tenth Doctor's demise. Martha accompanies them for
three episodes; in two, the Doctor battles the alien Sontarans, and last of which sees him become a father of sorts to
Jenny, in "The Doctor's Daughter". He meets archaeologist and future companion River Song for the first time from his
perspective in the two-parter "Silence in the Library"/"Forest of the Dead"; she dies, but he stores her consciousness to
a hard drive to live on forever, after accepting that one day she will come to mean a lot to him. After Donna encounters
Rose in an alternate timeline in "Turn Left", the Doctor realises that it must herald the end of the world. In finale
episodes "The Stolen Earth" and "Journey's End" (which crossover with spin-offs Torchwood and The Sarah Jane
Adventures), the Doctor and Donna reunite with former companions Rose, Sarah Jane, Martha, Jack and Mickey to
save the universe from Davros, the creator of the Daleks. A half-human clone Doctor is created from the Doctor's
earlier severed hand, and Donna is given the mind of a Time Lord; the clone Doctor enjoys a happy ending with Rose
in the parallel universe, though the Doctor is forced to erase Donna's memories to save her life, leaving him alone. A
Doctor Who Prom mini-episode, "Music of the Spheres", features a lone Doctor composing his musical Ode to the
Universe before being interrupted by the small alien Graske.

In lieu of a 2009 series, Tennant appears as the Tenth Doctor, without a regular companion, in several special episodes
over the course of 2008 and 2009, the last of which airs on New Year's Day, 2010. In the Christmas Special "The
Next Doctor", the Doctor mistakenly believes he has met a later incarnation of himself in an amnesiac Londoner, with
whom he saves Victorian-era London. "Planet of the Dead" (Easter 2009) features jewel thief Lady Christina de Souza
as the Doctor's one-off companion, and the Doctor is presented with a prophecy of his imminent death. Tennant makes
a crossover appearance in a "The Sarah Jane Adventures" two-parter, "The Wedding of Sarah Jane Smith", in which a
powerful being known as the Trickster also alludes to the Tenth Doctor's impending demise. In "The Waters of Mars",
the Doctor tries to alter history and avert the death of one-off companion Adelaide Brooke; when she commits suicide,
he begins to feel his mortality weigh down upon him. In the animated serial Dreamland, the Doctor is joined by two
one-off companions in 1950s Roswell, New Mexico. In the two-part send-off The End of Time, the Doctor confronts
the Ood about their original prophecy and is led to contemporary Earth where, in the second part, the
again-resurrected Master restores Gallifrey and the Time Lords to existence, although he redeems himself in assisting
the Doctor to defeat Time Lord President Rassilon and disappearing alongside the other Time Lords. The Doctor
sacrifices his life to save Wilfred Mott, exposing himself to 500,000 rads of deadly radiation in the process, and
triggering his regeneration. He holds it back and visits each of his companions, though of these the audience only sees
his most recent ones. He gives Donna a winning lottery ticket on her wedding day, saves Martha and Mickey from a
Sontaran sniper, saves Sarah Jane's son Luke from a car, introduces Jack to a romantic interest, Alonso Frame, and
before regenerating into the Eleventh Doctor, informs Rose circa 2005 that she is about to have a "great year." At the
absolute end of his endurance, and aided by the song of the Ood, the Doctor barely staggers back to the TARDIS and
sets a new course. Fighting the inevitable with his final breath, the Tenth Doctor says his last words; "I don't want to
go", before regenerating in a violent and explosive manner.
The Eleventh Doctor was played by Matt Smith from 2010 to the Present
The Eleventh Doctor first appears in the final minutes of The End of Time (2010) when his
previous incarnation regenerates. Smith debuts fully in "The Eleventh Hour", where he first
meets Amy Pond in her childhood while investigating a mysterious crack in her wall. As a result
of his time travelling during the episode, for twelve years, young Amelia Pond remembers,
draws, and plays make-believe games about "The Raggedy Doctor", whom she met as a child.

Amy agrees to join the Doctor as his travelling companion on the eve of her marriage to Rory
Williams. In "Victory of the Daleks", he is tricked into spawning a new generation of Daleks. In
"The Time of Angels"/"Flesh and Stone", he re-encounters future companion River Song and
his enemies the Weeping Angels, and learns that cracks like the one in Amy's wall are erasing individuals whole-cloth
from time and space. After Amy attempts to seduce the Doctor, the Doctor takes Rory as a second companion from
"The Vampires of Venice" up until "Cold Blood", where he is erased from history by a crack. The Doctor also
confronts his dark side in "Amy's Choice", where he is put through trials by a manifestation of his self-loathing, the
Dream Lord. In the finale episodes "The Pandorica Opens" and "The Big Bang", an unknown force triggers the
TARDIS to explode, which causes the universe to collapse in on itself. Though he closes the cracks – reversing their
effects and preventing the explosion – the Doctor himself is erased from history. However, River assists Amy in
remembering the Doctor back into existence. He returns at her wedding to Rory, and the couple rejoin the Doctor as
his companions. The Doctor next appears later in 2010 in Death of the Doctor, a two-part story of spin-off series The
Sarah Jane Adventures, alongside former companions Sarah Jane Smith and Jo Grant, while Amy and Rory were on
honeymoon.

The 2010 Christmas special "A Christmas Carol" is a take on the Charles Dickens classic. Subsequently, series 6 in
2011 continues to examine mysteries left unexplained at the end of series 5. In "The Impossible Astronaut"/"Day of the
Moon", Amy, Rory and River witness a future version of the Doctor get murdered; they vow to keep the secret from
the Doctor, but Amy unknowingly tells him in "The Almost People". At the conclusion of this two-parter, it is revealed
that Amy is pregnant and has been kidnapped by Madame Kovarian. In "A Good Man Goes to War", the Doctor
calls in old favours from across the time and space to raise and army to rescue Amy, but is unable to rescue her child,
Melody Pond. The Doctor also learns that Melody, though Rory and Amy's child is part Time Lord, and will grow up
to become River Song. In "Let's Kill Hitler", the Doctor re-encounters her just before she regenerates into her familiar
form, and learns she has been conditioned by a religious order known as the Silence to assassinate him; the Doctor's
faith in the future River Song, however, convinces her to save his life and start her on the right path. At the end of the
episode, he downloads his own data base from the Teselecta, giving him full knowledge of his death. In "The God
Complex" The Doctor encounters his worst fear, which is behind door number 11. Exclaiming that it is his fault that
Amy was in danger from the Minotaur, he leaves Amy and Rory back at their house.



More to Come!
TARDIS
Time And Relative Dimensions In Space
When Doctor Who was being developed in 1963, the production staff discussed
what the Doctor's time machine would look like. To keep the design within budget, it
was decided to make it resemble a police box. This was explained in the context of
the series as a disguise created by the ship's "chameleon circuit", a mechanism which
is responsible for changing the outside appearance of the ship in order to fit in with its
environment. The Ninth Doctor explains that if, for example, a TARDIS (with a
working chameleon circuit) were to materialise in ancient Rome it might disguise itself
as a statue on a plinth. The First Doctor explained that if it were to land in the middle
of the Indian Mutiny, it might take on the appearance of a howdah (the carrier on the
back of an elephant). A further premise was that the circuit was broken, explaining
why it was "stuck" in that form.

The idea for the police-box disguise came from BBC staff writer Anthony Coburn,
who rewrote the program's first episode from a draft by C. E. Webber. Coburn is
believed to have conceived the time machine's external form after spotting a real
police box while walking near his office on a break from writing the episode. In the
first episode, An Unearthly Child, the TARDIS is first seen in a 1963 junkyard; it
subsequently malfunctions, retaining the police box shape in a prehistoric landscape.

At the time of the series' debut in 1963, the police box was still a common fixture in
British cities. It provided a direct telephone link to the local police station; the
telephone was located behind a small, hinged door, making it possible to use it from the outside, while the box itself was used as a
temporary office containing a desk. In "The Empty Child" (2005), the Doctor stated that the telephone is not connected to a telephone
line, and in Logopolis (1981), the Master materialised his TARDIS around a normal police box while a police officer was using the
telephone, causing the line to go dead. With approximately 700 in London alone, the police box was a logical choice for the time
machine's camouflage.

While the idea may have begun as a creative ploy by the BBC to save time and money on props, it soon became an in-joke genre
convention in its own right, as the old-style police box was phased out of use. The anachronism has become more pronounced, since
there have been very few police boxes of that style left in Britain for some considerable time. Despite changes in the prop, the TARDIS
has become the show's most consistently recognisable visual element.

The type of police box that the TARDIS resembled was constructed of concrete. However, the props for the television series were
originally made of wood, and later on of fibreglass, for easy transportation and construction on location as well as within the confines of
a studio set.

The dimensions and colour of the TARDIS props used in the series have changed many times, as a result of damage and the needs of
the show, and none of the BBC props has been a faithful replica of the original MacKenzie Trench model. This was referenced
on-screen in the episode "Blink" (2007), when the character Detective Inspector Shipton says the TARDIS "isn't a real [police box].
The phone's just a dummy, and the windows are the wrong size."
The production team conceived of the TARDIS travelling by dematerialising at
one point and rematerialising elsewhere, although sometimes in the series it is
shown also to be capable of conventional space travel. In the 2006 Christmas
special, "The Runaway Bride", the Doctor remarks that for a spaceship, the
TARDIS does remarkably little flying. The ability to travel simply by fading into
and out of different locations became one of the trademarks of the show, allowing
for a great deal of versatility in setting and storytelling without a large expense in
special effects. The distinctive accompanying sound effect – a cyclic wheezing,
groaning noise – was originally created in the BBC Radiophonic Workshop by
Brian Hodgson. He produced the effect by dragging a set of house keys along the
strings of an old, gutted piano. The resulting sound was then recorded and
electronically processed with echo and reverb. When employed in the series, the
sound is synchronised with the flashing light on top of the police box. The comic
strip feature of Doctor Who Magazine traditionally represents the ship's distinctive
dematerialisation sound with the onomatopoeic phrase "vworp vworp". River
Song informs the Doctor in The Time of Angels that it only makes this noise
because he leaves the brakes on, and the Doctor defensively responds that he
likes the noise.
In 1996, the BBC applied to the UK Patent Office to register the TARDIS as a trademark. This was challenged by the Metropolitan
Police, who felt that they owned the rights to the police box image. However, the Patent Office found that there was no evidence that
the Metropolitan Police – or any other police force – had ever registered the image as a trademark. In addition, the BBC had been
selling merchandise based on the image for over three decades without complaint by the police. The Patent Office issued a ruling in
favour of the BBC in 2002.
TARDISes are grown, not made ("The Impossible Planet"). They draw their power from several sources, but primarily from the
singularity of an artificial black hole, known as the Eye of Harmony. In The Edge of Destruction (1964), the power source of the
TARDIS (referred to as the "heart of the TARDIS") is said to be beneath the central column of the console. They are also said to
draw power from the entire universe as revealed in the episode "Rise of the Cybermen", in which the TARDIS is brought to a parallel
universe and cannot function without the use of a crystal power source from within the TARDIS, charged by the Doctor's life force.

fluid links), the rare ore Zeiton 7 (Vengeance on Varos, 1985), a trachoid time crystal (The Hand of Fear, 1976) and "artron energy".
The latter is a form of temporal energy, generated by Time Lord minds, which is also said to help power TARDISes (The Deadly
Assassin, 1976; Four to Doomsday, 1982, The Doctor's Wife, 2011). Another form of energy, "huon energy", is found in the heart of
the TARDIS and (apart from the activities of the Torchwood Institute) nowhere else in the universe ("The Runaway Bride").

Before a TARDIS becomes fully functional, it must be primed with the biological imprint of a Time Lord, normally done by simply
having a Time Lord operate the TARDIS for the first time. This imprint comes from the Rassilon Imprimatur, part of the biological
make-up of Time Lords, which gives them both a symbiotic link to their TARDISes and the ability to withstand the physical stresses of
time travel (The Two Doctors, 1985).

Without the Imprimatur, molecular disintegration would result; this serves as a safeguard against misuse of time travel even if the
TARDIS technology were copied. Once a time machine is properly primed, however, with the imprint stored on a device called a
"briode nebuliser", it can be used safely by any species. According to Time Lord law, unauthorised use of a TARDIS carries "only one
penalty", implied to be death (The Invasion of Time).

A TARDIS usually travels by de-materialising in one spot, traversing the time vortex, and then re-materialising at its destination,
without physically travelling through the intervening space. However, the Doctor's TARDIS has been seen to be able to fly through
physical space, first in Fury from the Deep (1968) and at repeated times throughout the revived series, most notably in "The Runaway
Bride" (2006), in which the TARDIS is shown launching into space (most previous incidents show the TARDIS flying only after it has
dematerialised from a location). In "The Runaway Bride", extended flight of this nature puts a strain on the TARDIS's systems. While a
TARDIS can materialise inside another, if both TARDISes occupy exactly the same space and time, a Time Ram will occur, resulting
in their mutual annihilation (The Time Monster). In Logopolis, the Master tricked the Doctor into materialising his TARDIS around the
Master's, creating a dimensionally recursive loop, each TARDIS appearing inside the other's console room. In the mini-episodes
Space and Time (2011), an accident results in the TARDIS automatically materializing in "the safest spot available," which turns out to
be inside its own control room. The Eleventh Doctor describes this as "worse than a time loop - a space loop. Nothing can enter or
leave this ship ever again." However, a version of Amy Pond from seconds in the future appears as soon as he says this, proving the
Doctor wrong and allowing him to rectify the problem.

Apart from the ability to travel in space and time (and, on occasion, to other dimensions), the most remarkable characteristic of a
TARDIS is that its interior is much larger than it appears from the outside. The explanation is that a TARDIS is "dimensionally
transcendental", meaning that its exterior and interior exist in separate dimensions. In The Robots of Death (1977), the Fourth Doctor
tried to explain this to his companion Leela, using the analogy of how a larger cube can appear to be able to fit inside a smaller one if
the larger cube is farther away, yet immediately accessible at the same time (Like a Tesseract). According to the Doctor,
transdimensional engineering was "a key Time Lord discovery". To those unfamiliar with this aspect of a TARDIS, stepping inside the
ship for the first time usually results in a reaction of shocked disbelief as they see the interior dimensions.
Usually a Shocked - "Its Bigger on the Inside.....!" comment

Susan Foreman, the Doctor's granddaughter, claimed to have coined the name TARDIS: "I made it up from the initials". The word
TARDIS is used to describe other Time Lords' travel capsules as well. The Discontinuity Guide by Paul Cornell, Keith Topping and
Martin Day suggests that "she was a precocious young Time Lady, and her name for travel capsules caught on." The Virgin New
Adventures novel Lungbarrow by Marc Platt records Susan telling the First Doctor that she gave him the idea when he was, implicitly,
the "Other". However, it should be noted that, on screen in the episode "An Unearthly Child", Susan only takes credit for coining the
acronym, not the actual full name itself.

As seen in The Trial of a Time Lord (1986), the experiences of the TARDIS and its crew can be recorded and played back from the
Matrix, the Time Lord computer network that is the repository of all their knowledge, as well as the memories and experiences of
deceased Time Lords. The Doctor implies in this serial, with his protestations of being "bugged", that the TARDIS is not normally
connected to the Matrix in this manner.

The TARDIS has been shown to be incredibly rugged, withstanding gunfire (the 1996 television movie, Doctor Who; "The Runaway
Bride"), temperatures of 3000 degrees without even scorching ("42"), atmospheric re-entry ("Voyage of the Damned"), and falls of
several miles ("The Satan Pit"). In The Curse of Peladon, after the TARDIS falls down the side of a cliff, the Third Doctor remarks
that it "may have its faults, but it is indestructible." This doesn't apply when facing certain extremely advanced weaponry, often created
after the Doctor's Type 40 TARDIS, such as Dalek missiles ("The Parting of the Ways"), for which the TARDIS requires additional
shielding. Another piece of advanced Dalek technology which comes near to destroying the TARDIS is the power source of the
Crucible in "Journey's End" (2008). In Frontios (1984), the Fifth Doctor believes the TARDIS to have been destroyed in a meteorite
bombardment, apparently contradicting the earlier claim of indestructibility. It explodes in the Mind Robber and the crew end up "out
of the time space dimension. Out of reality." In 2007's Christmas special "Voyage of the Damned", the TARDIS is hit in mid-flight,
creating a large hole in the interior wall, although its shields are down at the time. The Doctor later activates some controls and the
TARDIS again becomes able to withstand an atmospheric re-entry.
Still Under Construction! But there is more to come for the
TARDIS!!!
.