94-597: Logopolis is the seventh and final serial of the 18th season of the British science fiction television series Doctor Who , which was first broadcast in four weekly parts on BBC1 from 28 February to 21 March 1981. It was Tom Baker 's last story as the Fourth Doctor and marks the first appearance of Peter Davison as the Fifth Doctor and Janet Fielding as new companion Tegan Jovanka . The serial
188-665: A Time Lord can regenerate twelve times (thirteen incarnations in all). There were exceptions to this rule, however: when the Master reached the end of his regenerative cycle, he took possession of the body of another person to continue living. In " The Five Doctors ", the Master was offered a new cycle of regenerations by the High Council to save the Doctor from the Death Zone, which may indicate that there are methods to circumvent
282-683: A Time Lord. This story element was notably featured in Series 3 ; the Doctor uses it to hide himself from the Family of Blood and becomes a schoolteacher in Edwardian England. His nemesis the Master used it to disguise himself as a human to escape the Time War. The story element is later revisited in the Series 12 episode " Fugitive of the Judoon " when a mysterious, unknown incarnation of
376-446: A crack in time to grant him a full new regeneration cycle. The revelation in 2020's The Timeless Children that The Doctor is, in fact, not Gallifreyan and instead had their DNA used to give Gallifreyans the ability to regenerate, calls into doubt whether or not the Doctor does in fact have a limit to their regenerations, or if they merely believed they did due to all other Time Lords being limited. The Time Lord homeworld, Gallifrey ,
470-675: A different concept of ageing from humans. In " The Stolen Earth ", the Tenth Doctor refers to when who he thought was his original incarnation was a "kid" at 90 years old. However, within a specific incarnation, a Time Lord is able to age, albeit much more slowly than a human. The War Doctor and Eleventh Doctor , over the course of the Last Great Time War and the Battle of Trenzalore , respectively, are seen to age within their respective incarnations to what would appear to
564-596: A female. The Doctor also regenerated as a woman in " Twice Upon A Time ", as the Thirteenth Doctor . Whether or not Time Lords can recognise each other across regenerations is not made entirely clear: In " The Impossible Astronaut ", a future version of the Eleventh Doctor is shot, causing him to begin his regeneration cycle. He is shot again before the regeneration completes, causing him to die instantly. However, in " The Wedding of River Song ", it
658-399: A hand. Also seen in " Journey's End ", is the apparent ability to siphon off regeneration energy in order to cancel the effect of changing appearance; which requires them to have a "bio-matching receptacle" (in this case the Doctor's severed hand), which is usually impractical. However, this "non-regeneration" was revealed as "counting" towards the Doctor's twelve possible regenerations during
752-498: A human to be old age; both conflicts are suggested within the series to last hundreds if not thousands of Earth years. In The Two Doctors , the Second Doctor states that the "Rassilon Imprimatur" allows Time Lords to safely travel through time, becoming symbionts with their TARDISes, and that the reason other species are incapable of developing time travel is that they lack the imprimatur. However, he implies later that he
846-461: A message across space, threatening to destroy the CVE and render the heat death process completely unstoppable, effectively blackmailing the rest of the universe to submit to him. The Doctor quickly runs out onto the telescope's gantry to disconnect the power cable, which will prevent the Master from destroying the CVE, but the Master in turn tilts the dish downwards. Left with only the cable supporting him,
940-563: A new personality. Regenerations can be traumatic. In Castrovalva , the Fifth Doctor requires the use of a Zero Room, a chamber shielded from the outside universe that provides an area of calm for him to recuperate. The Time Lord's personality also sometimes goes through a period of instability following a regeneration, such as in The Christmas Invasion . It was first stated in The Deadly Assassin that
1034-622: A passenger, Tegan Jovanka , an airline stewardess who entered the Police box seeking help for a broken-down car. At Logopolis, everything seems normal as the Doctor provides the Monitor, the lead mathematician, his measurements to give to the others and perform their verbal calculations. They soon discover that the Master had arrived first, with several of the mathematicians killed by his tissue-compression eliminator. The Master's TARDIS materialises, and he and Nyssa , under his hypnotic control, seize
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#17327731905681128-482: A powerful and wise race from the planet Gallifrey , from which the Doctor was a renegade; details beyond this were very limited for the first decade of the series. They later became integral to many episodes and stories as their role in the universe developed. For the first eight years after the series resumed in 2005, the Time Lords were said to have been destroyed during the Last Great Time War at some point in
1222-544: A race called Time Lords, and in Spearhead from Space (1970), the Doctor's earlier description of himself as a human is retconned when the Third Doctor explicitly states that he is not human. In The Time Warrior (1973–1974), the name of the Doctor's home planet, Gallifrey , was revealed on screen for the first time. The Time Lords are considered one of the oldest and most technologically powerful races in
1316-401: A return to the format of early seasons, virtually all serials from Seasons 18 through 20 are linked together, often running directly into each other. Three serials – Full Circle , State of Decay , and Warriors' Gate – are part of a trilogy within the season. These three serials include the arrival of Adric and the departure of Romana and K9. Over the period of Christmas 1980, the season took
1410-415: A stagnated ceremony-bound oligarchy and their past having descended into myth and legend . The Doctor became at times an ally, being appointed their president during his fourth , fifth , and twelfth incarnations and assisting them on many other occasions. In an audio commentary recorded for the 2009 DVD release of The War Games (1969), producer Derrick Sherwin mentioned how in a discussion with
1504-660: A story and has a nonsensical ending." A novelisation of this serial, written by Christopher H. Bidmead , was published by Target Books in October 1982. An unabridged reading of the novelisation by Bidmead was released by BBC Audiobooks in February 2010, with a completely new cover. The story was released on VHS in March 1992. In January 2007, the serial was released on DVD as part of a trilogy, entitled New Beginnings , alongside The Keeper of Traken and Castrovalva . Logopolis
1598-461: A trial is a "very rare" event for the Time Lords. Exceptions to this policy are made only in extreme circumstances when they feel they have to, such as where the Doctor calls them for help in the serial. At the start of the 2005 television series, Gallifrey was thought to have been destroyed and the Time Lords functionally extinct as a result of a mutually destructive Time War with the Dalek race;
1692-554: A two-week transmission break between the broadcasts of State of Decay and Warriors' Gate . The entire season was broadcast from 30 August 1980 to 21 March 1981. All releases are for DVD unless otherwise indicated: Regeneration (Doctor Who) The Time Lords are a fictional ancient race of extraterrestrial people in the British science fiction television series Doctor Who . Time Lords are so named for their command of time travel technology and their non-linear perception of time. Originally, they were described as
1786-688: A warrior greater than either", which is "half-Dalek, half-Time Lord", while in " Hell Bent " (2015), the General, while describing the prophecy of the Hybrid, mentions the Time Lords as one of two warrior races along with the Daleks . In " Before the Flood " (2015), the Fisher King describes the Time Lords as "cowardly, vain curators, who suddenly remembered they had teeth, and became the most warlike race in
1880-498: Is able to interface with his spaceship in ways that only a 'time-sensitive' is supposed to be able to. In " Utopia ", the Tenth Doctor states that he finds it difficult to look at Captain Jack Harkness because Jack's existence has become fixed in time and space. In the Series 4 episode " Journey's End ", the Tenth Doctor was shown to use his telepathic abilities to wipe Donna Noble's mind of certain memories, specifically
1974-495: Is an Earth-like planet in the fictional constellation of Kasterborous. It is located in a binary star system 250 million light years from Earth. The points in time when Gallifrey appears are never definitively stated. As the planet is often reached by means of time travel, its relative present could conceivably exist almost anywhere in the Earth's past or future, as well as anywhere in the conceivable universe. From space, Gallifrey
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#17327731905682068-400: Is revealed this was a shape shifting android the Doctor used to fake his death, making this questionable. It's a bit dodgy, this process, you never know what you're gonna end up with. In cases of non-fatal injury, Time Lords who have recently regenerated can use left over cellular energy to heal and even regrow severed limbs, as seen in " The Christmas Invasion " where the Tenth Doctor regrows
2162-536: Is seen as a yellow-orange planet and was close enough to central space lanes for spacecraft to require clearance from Gallifreyan Space Traffic Control as they pass through its system. The planet was protected from physical attack by an impenetrable barrier called the quantum force field, and from teleportation incursions by the transduction barrier—which could be reinforced to repel most levels of this type of technological attack. The Doctor's granddaughter Susan first describes her home world (not named as "Gallifrey" at
2256-553: Is seen using this method to query a cat about the goings-on of the flat in " The Lodger ". In " A Good Man Goes to War " and " Closing Time " he is apparently able to even understand babies, as well as horses in " A Town Called Mercy ". In " The Girl in the Fireplace ", the Tenth Doctor reads the mind of Madame de Pompadour —and in the process, to his surprise, she is able to read his mind as well. In " The End of Time ",
2350-549: Is set on the planets Earth and Logopolis. In the serial, the Doctor, a time traveller from the planet Gallifrey , forms a temporary truce with his arch-enemy the Master ( Anthony Ainley ) to stop the unravelling of the universe which the Master had started by accident. The serial was the last Doctor Who story aired on Saturday evening for four years. When Peter Davison took over as the Fifth Doctor in January of 1982,
2444-403: Is somehow innately able to sense which events in time are 'fixed' and which are in 'flux'. The Eleventh Doctor slightly amends what was said earlier in " The Doctor's Wife ", saying that he could only sense if there were other Time Lords in this universe. In the original series episode Warriors' Gate , Romana is called a 'time-sensitive' by a marauding slaver and, though she seems to deny this,
2538-453: Is speculated by Donna Noble in " The Doctor's Daughter " (2008) to be a surviving Time Lord, though the Doctor initially rejects the suggestion. Two other Time Lord-like beings appeared in " Journey's End " (2008): Donna, briefly empowered with the mind and knowledge of a Time Lord, and a half-human clone of the Tenth Doctor. Donna's memories related to the Doctor, as well as her Time Lord knowledge, are buried in order to save her life, while
2632-472: Is still conscious and able to return to return to the TARDIS and Pandorica respectively. In Death of the Doctor , the Eleventh Doctor responds to a question from Clyde Langer by saying he can regenerate "507" times. Early news reports, before the episode was broadcast, suggested he would say there is no limit to the number of regenerations. Writer Russell T Davies stated in an interview with SFX that
2726-462: Is still there but the M25 now bridges the road where the scene was filmed. The closing titles sequence was recompiled with Tom Baker's face removed from the closing credits of Episode 4. The same opening and end title sequence and arrangement of the theme music was used for the following story, Castrovalva , and next three seasons, but was altered to include Peter Davison's face. Episode 4 of this story
2820-514: The 2005 series , the Ninth Doctor claims that he can sense the movement of the Earth through space as well as being able to perceive the past and all possible futures. He is also able to concentrate and time his motions well enough to step safely through the blades of a rapidly spinning fan, and later claims that if any Time Lords still existed, he would be able to sense them. As the Tenth Doctor he repeats this assertion, adding also that he
2914-480: The Doctor Who universe. In The Time Warrior , the Time Lords are characterised by Sontaran military intelligence, quoted by Commander Linx , as "a race of great technical achievement, but lacking the morale to withstand a determined assault". In " The Witch's Familiar " (2015), Davros mentions a prophecy on the Doctor's world that spoke of a hybrid made up of "two great warrior races forced together to create
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3008-744: The Krillitane Mr Finch in " School Reunion " (2006). In " Father's Day " (2005), the Ninth Doctor remarks that before Time Lords were "all gone", they would have prevented or repaired paradoxes such as that which attracted the Reapers to 1987 Earth. In " Rise of the Cybermen " (2006), the Tenth Doctor mentions, "When the Time Lords kept their eye on everything, you could pop between realities , home in time for tea. Then they died, and took it all with them. Walls of reality closed,
3102-613: The Ninth Doctor describes his planet as "just rocks and dust" in " The End of the World " (2005), and mentions in " Dalek " (2005) that the Time Lords "burnt" with the Daleks at the end of the "Last Great Time War", and the Tenth Doctor tells the Master in " The Sound of Drums " (2007) that the Time Lords are "dead" and "all [they've] got is each other". The Doctor describes himself as the last of his kind and says his planet burned on numerous other occasions, as do other individuals, such as
3196-517: The Series 5 episode " The Big Bang " the Doctor telepathically left a message in Amy Pond 's head before sealing her into the Pandorica so that she would know what was happening when she woke up. Time Lords also have the ability to regenerate their bodies when their current body is mortally wounded. This process results in their body undergoing a transformation, gaining a new physical form and
3290-478: The Seventh as the "Old Doctor". The 2005 relaunch returned the credit to "Doctor Who", and then again to "The Doctor" in " The Christmas Invasion " (at the request of David Tennant ). Also, Episode 4 was the first to credit two actors as "Doctor Who" or "The Doctor" when a regeneration scene was involved. It also happened at the end of Episode 4 of The Caves of Androzani (1984). In both instances, Peter Davison
3384-569: The BBC moved Doctor Who from Saturday nights to a new weekday prime time slot, airing two episodes per week; it did not return to Saturday evenings until 1985. Alerted to impending trouble by the TARDIS 's Cloister Bell, the Fourth Doctor decides to stay out of trouble, and instead repair the TARDIS's broken chameleon circuit by materialising around a real police box on Earth and recording its exact dimensions with Adric 's help. With those, he can give
3478-463: The CVEs, entropy is taking over. The Monitor urges the Doctor to use their program to create a fully stable CVE, before he disintegrates. The Doctor and Master agree to work together and, after releasing Nyssa, bring Tegan with them to the Master's TARDIS and depart for Earth. Adric and Nyssa try to follow in the Doctor's TARDIS, but initially end up far outside the universe, and watch as entropy obliterates
3572-781: The Doctor " (2013), it is shown that the Eighth Doctor regenerates into the War Doctor to fight in the Time War. Many years later, as shown during " The Day of the Doctor " (2013) and also described by the Partisan in "The End of Time", the War Doctor originally planned to use a Time Lord weapon known as the Moment to destroy the Time Lords and Daleks. However, after being shown the Tenth and Eleventh Doctors during "The Day of
3666-548: The Doctor (played by Jo Martin ), is revealed to have been hiding on Earth as a tour guide named “Ruth Clayton” using a Chameleon Arch. Time Lords can communicate by telepathy , and can link their minds to share information and enhance their powers. In Castrovalva , the Doctor activates the TARDIS' Zero Room mentally. Additionally, both the Doctor and the Master demonstrate significant hypnotic abilities which may be supplemented by their telepathic abilities. These powers were elaborated upon from 2005. The Eleventh Doctor
3760-425: The Doctor engages in astral projection , but warns that if he is disturbed while doing so, his mind could become severed from his body and he could die. In " Last of the Time Lords ", the Doctor telepathically interfaces with a network tapped into the human population who collectively chant his name. The focus of psychic energy granted the Doctor the ability to de-age himself, float through the air, deflect shots from
3854-513: The Doctor forever. This again implies that regeneration is not inevitable and can indeed be refused. Upon encountering the remains of fellow Time Lord the Corsair in " The Doctor's Wife ", the Doctor refers to the Corsair as both male and female, hinting that Time Lords can switch genders upon their regenerations; this is confirmed in " Dark Water ", in which the Master , previously seen in various male incarnations for over forty years, returned as
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3948-509: The Doctor is able to shake off an electrocution attempt which is fatal to a number of humans, and appears unaffected by the energy whip wielded by the Sycorax in " The Christmas Invasion ". In " Smith and Jones " the Tenth Doctor says that the radiation given off by X-rays pose no real threat to Time Lords, and proceeds to absorb an amount that would be lethal to a human, which he subsequently expels through his foot. "The End of Time" shows
4042-420: The Doctor remarks upon her ability, she comments that he should have stayed in university. However, despite showing several appearances, Romana regenerated only once on that occasion. In " Utopia ", the Master, just before regeneration, claimed that he would become "young and strong", implying that he could choose the form of his new body. The human-Time Lord hybrid River Song in " Let's Kill Hitler " claimed she
4136-485: The Doctor spends centuries believing he burnt Gallifrey until the Eleventh Doctor's time; this is because the time streams are out of sync after the War Doctor meets his future selves and the altered events are only known to the Doctor once they occur in the Eleventh Doctor's experience and become part of his memory. Indeed, earlier on in the episode, both the Tenth and the Eleventh Doctors mistakenly believe that
4230-503: The Doctor tears it out of its housing, deactivating the dish, but also dropping the Doctor several hundred feet to the ground. The Master escapes in his TARDIS. Adric, Nyssa, and Tegan gather around the mortally-injured Doctor, who has visions of his past companions and enemies. His three companions see the Watcher appear, and the Doctor explains that "It's the end... but the moment has been prepared for." The Watcher touches and merges with
4324-426: The Doctor there to begin with for questioning—and exile him in "Hell Bent" before running off again. Time Lords and human beings look alike, however they differ in many respects. Physiological differences from humans include two hearts which normally beat at 170 beats per minute, and a "respiratory bypass system" that allows them to survive strangulation. The Twelfth Doctor was able to survive direct exposure to
4418-404: The Doctor would be in trouble. In a 2016 interview with The Essential Doctor Who magazine, Dicks mentioned how when Sherwin and he were discussing The War Games one day, Sherwin said, "He belongs to this mysterious race called the Time Lords, doesn't he?" with "everything" ultimately coming from that discussion. In The War Games DVD commentary, Sherwin mentioned that he recalled hearing about
4512-455: The Doctor", he works together with them to change the assumed outcome of the Time War : thirteen incarnations of the Doctor team up together to freeze Gallifrey in time and place it outside of their universe (protecting it and the remaining Time Lords), while the Daleks destroy themselves in their own crossfire once Gallifrey is gone. The War Doctor does not retain the memory of these events and
4606-481: The Doctor's, Madame Vastra , reminds the Doctor that the Time Lord race developed due to their billions of years' exposure to the time vortex. The Doctor then recalls that Rory and Amy had spent their wedding night in the TARDIS; therefore it is theorised by Vastra that River's conception mirrored that of the Time Lords' genesis and therefore she herself developed Time Lord genetic characteristics. In " The Night of
4700-755: The Doctor, causing him to regenerate into the Fifth Doctor . The location scenes at the Pharos Project were filmed at a BBC receiving station in Crowsley Park , with a model standing in for the radio telescope, and not the Lovell Telescope at the Jodrell Bank Observatory . The lay-by seen at the start was filmed on the southbound side of the A413 Amersham Road, Denham near Gerrards Cross . The lay-by
4794-571: The Master uses the same technique, allowing the Tenth Doctor to hear the drumming sound the Master constantly hears. The Doctor later displays his telepathic communion powers in " Fear Her " and in " The Shakespeare Code ", where by using his mind melding technique he is partially able to relieve a man of his mental illness as he traces back through his memories. In " Planet of the Ood ", the Tenth Doctor seems able to temporarily confer some degree of telepathy on his companion Donna Noble, so that she can hear
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#17327731905684888-528: The Master's laser screwdriver, and telekinetically disarm the Master. In addition, Time Lords may be clairvoyant , or have additional time-related senses. In The Time Monster , and Invasion of the Dinosaurs , the Third Doctor is able to resist fields of slow time, being able to move through them even though others are paralysed . In City of Death , both the Fourth Doctor and Romana notice distortions and jumps in time that no one else does. In
4982-536: The Tenth Doctor as being capable of surviving (for a short period) a massive burst of radiation that would have killed anything else instantly. However, the radiation burst caused enough damage to start a regeneration. Time Lords are extremely long-lived, routinely counting their ages in terms of centuries; the Second Doctor claimed in The War Games that Time Lords could live "practically forever, barring accidents". The series has suggested that Time Lords have
5076-457: The Tenth Doctor explains to Wilfred Mott that a Time Lord can die before they have a chance to regenerate, in which case they die outright. In The Deadly Assassin at least one of the murders was carried out with a 'staser', possibly a weapon designed to both kill and prevent regeneration (stasers are also stated to have little effect on non-living tissue). In the Series 4 episode " Turn Left ",
5170-423: The Tenth Doctor's body is shown on a stretcher following the parallel events of " The Runaway Bride ". A UNIT officer states that the Doctor's death must have been too quick to allow for regeneration. In Destiny of the Daleks , Romana showed the ability to rapidly change form several times in a row during her first regeneration, and apparently had the ability to change into whatever appearance she desired. When
5264-411: The Time Lords are attempting to return to the universe and will come back if he speaks his true name. Due to "half the universe" surrounding Trenzalore, a siege begins that lasts centuries as the Doctor knows that if the Time Lords return, the Time War will begin anew. With the Doctor on the verge of death, Clara Oswald pleads with the Time Lords through the crack to intervene and save the Doctor. Through
5358-529: The Time Lords at the beginning of the series, but as no one else remembered this, it "might have come out of [his] dreams". Elaborating on this genesis in a 2014 interview in Doctor Who Magazine , Sherwin said of The War Games , "It was a case of what shall we do, how can we end this? Let's go back to the beginning and say [the Doctor] was a Time Lord, a renegade Time Lord, a pain in the arse for
5452-409: The Time Lords have the ability to grant more regenerations: at the behest of Clara Oswald they granted the Doctor himself a new cycle when he was at the point of death from old age, having used up his entire cycle. Regeneration, regardless of how many regenerations the individual Time Lord has already undergone, is a conditional and non-inevitable phenomenon. This is stated in " The End of Time " when
5546-465: The Time War. During the episode "The Doctor's Wife" it is revealed that several Time Lords and their TARDISes had been trapped and destroyed by an entity called House who lived in a separate bubble universe. In " A Good Man Goes to War " (2011), it is revealed that the daughter of Amy Pond and Rory Williams , Melody Pond (who later goes by her transliterated name " River Song "), has been born with Time Lord-like genetic traits. An old acquaintance of
5640-442: The War Doctor killed all of the Time Lords on the last day of the Time War. After being informed that the plan to save Gallifrey was successful, the Eleventh Doctor sets out to find Gallifrey and restore the Time Lords. In " The Time of the Doctor ", the Doctor visits the planet Trenzalore where he discovers a question being broadcast through all of time and space through a crack in the universe: "Doctor Who?" The Doctor realizes that
5734-483: The ability to stay conscious for moments after events that would outright kill other lifeforms instantly, giving them the opportunity to regenerate. This is seen in Logopolis (fall from a great height), and The Caves of Androzani (fatal disease). In both " The Stolen Earth " and " The Big Bang ", the Doctor is shot by a Dalek's energy weapon, which has almost always been shown to instantly kill any other lifeform, yet
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#17327731905685828-405: The clone lives out his existence in a parallel universe with Rose Tyler . " The End of Time " (2009–10) shows the High Council of Time Lords, led by Lord President Rassilon , attempting to escape the Time War by materialising Gallifrey in the place of Earth at Christmas. However, the Tenth Doctor destroys the device which allows their passage into the present, sending them back into the events of
5922-570: The control center and use a device to silence the other mathematicians, demanding the Monitor to explain the purpose of a radio telescope on the planet. The Monitor begs for the Master to stop the silencing device. The Master does so, but to the Monitor's horror, the mathematicians remain silent, and they find the planet starting to turn to dust. The Monitor quickly explains that their calculations were used to power Charged Vacuum Emboitments (CVEs) which were used to funnel off excess entropy from this universe to prevent its approaching heat death ; without
6016-447: The course of a single season. The season also sees the debut of Matthew Waterhouse as Adric , Sarah Sutton as Nyssa , and Janet Fielding as Tegan Jovanka , the three of whom would remain regular companions into the Fifth Doctor 's era, as well as the return of the Master , portrayed both by Geoffrey Beevers and Anthony Ainley . The season was the first to be produced by John Nathan-Turner , who would produce every season of
6110-467: The crack, the Time Lords grant the Doctor a new regeneration cycle, saving his life before sealing the crack again. In " Hell Bent " (2015), it is revealed that Gallifrey returned to the universe around the time of its end. After escaping his confession dial in " Heaven Sent " (2015), still furious over the death of Clara Oswald in " Face the Raven " (2015), the Doctor manages to depose Rassilon—who had put
6204-437: The episode "melancholy yet fascinating." In Doctor Who: The Episode Guide, Marc Campbell awarded the serial a 10 out of 10, praising it for "its weighty subject matter and the enormous scale of its threat." Conversely, Andrew Blair of Den of Geek felt the serial lacked pathos and regarded it as " a missed opportunity." Charlie Jane Anders called it "A moody, dark saga about computational engineering, that never quite gels as
6298-659: The events of Traken , the Master was thereafter played by Anthony Ainley , who would continue in the part for the rest of the classic series' run. Jacqueline Hill , who had played the First Doctor 's companion Barbara Wright , returned in Meglos , although playing a different character, the alien priestess Lexa. For Season 18 John Nathan-Turner replaces Graham Williams as producer. Barry Letts returns now as executive producer, for just this season. Christopher H. Bidmead also replaces Douglas Adams as script editor. In
6392-530: The events of " The Time of the Doctor ". In "The End of Time", the Tenth Doctor was able to postpone his regeneration long enough so that he could travel in time and space to see his past companions for one last time before he regenerated. The Fifth Doctor had also shown a similar ability in The Caves of Androzani , fighting off the effects of an impending regeneration so he can return to Androzani Minor to save his companion Peri. Time Lords appear to have
6486-514: The galaxy". In the very distant past, the Time Lords fought a genocidal war against the Great Vampires, which led to such a catastrophic loss of life that the Time Lords renounced violence. In The War Games , the Second Doctor mentions that the Time Lords' "great powers" are hardly ever used due to their policy of non-intervention into the affairs of other planets, and that they instead observe and gather knowledge. Because of this, holding
6580-488: The line was not intended to be taken seriously and is instead a commentary. He said that the "thirteen lives" rule was too deeply entrenched in the viewer consciousness for his throwaway line to affect it. It is revealed in " The Time of the Doctor " that this was in fact false and that due to his various regenerations, the Eleventh Doctor was in fact his last incarnation. However, the Time Lords intervened through
6674-452: The mathematicians of the planet Logopolis the right block-transfer computations to repair the circuit. The Master learns of the Doctor's plan, and materialises his TARDIS around the police box first, causing a recursion loop with the Doctor's. The Doctor eventually breaks his TARDIS out of the loop, but when they step outside, he sees a figure in white, the Watcher, telling him to go to Logopolis immediately. En route, they find they have gained
6768-411: The memories of her travels in the TARDIS and to 'implant' a defence mechanism which is activated in " The End of Time ". The War Games showed that other Time Lords are also able to erase people's memories, as in that story, Jamie and Zoe 's travels with the Doctor were erased from their memory, and the council of Time Lords also put a memory block on the Doctor so he could not pilot the TARDIS. In
6862-439: The other Time Lords who stole his TARDIS and buggered off around the universe. So if he's going to be called to book let's bring in the Time Lords." Early on in the series, the Doctor was identified as a human being; however, his home planet, which from the start of the series is explicitly established as not being Earth , was not named. In The War Games (1969), the Doctor's people appeared, who from then on are known as
6956-555: The return of The Master and the regeneration of the Fourth Doctor. Season 18 is the final season of Tom Baker as the Fourth Doctor after seven years in the role. New companions Adric ( Matthew Waterhouse ), Nyssa ( Sarah Sutton ), and Tegan Jovanka ( Janet Fielding ) make their introductions in Full Circle , The Keeper of Traken , and Logopolis , respectively. Romana , played by Lalla Ward , departs from
7050-657: The scanners being programmed to "detox" humans and therefore being unaware of what elements the Doctor requires. A Time Lord is able to conceal their Time Lord nature, and become a human, by using the Chameleon Arch – a device that stores their "essence" and memories in an innocuous device such as a fob watch , and replaces them with false counterparts until the object is later re-opened. The process allows them to disguise themselves as humans physiologically and psychologically, meaning they only have one heart and are stripped of non-human powers, and of any memory of having been
7144-510: The sector of space with Nyssa's home planet, Traken. However, they fix the controls to track and follow the Master's TARDIS to Earth. On Earth, the Doctor and Master use the radio telescope of the Pharos Project – from which the Logopolitans modelled theirs – to send the program, while the Doctor's companions help to waylay the project's guards. However, the Master holds the Doctor hostage with his tissue compression eliminator and broadcasts
7238-420: The serial The Leisure Hive , to 21 March 1981 with the serial Logopolis . The season is Tom Baker 's final as the Fourth Doctor before his regeneration into the Fifth Doctor ( Peter Davison ), as well as Lalla Ward 's as companion Romana II and John Leeson 's as the voice of K9 . For the second time (The first being during Season 4 and third being Season 21 ), the entire main cast changed over
7332-558: The serial in The Discontinuity Guide (1995), deeming it "a magnificent farewell." Patrick Mulkern of Radio Times awarded the serial four stars out of five. Much praise was given to Baker's performance, writing, "He's brooding, sparky and never for a second looks ready to give up." In The Greatest Show in the Galaxy: The Discerning Fan's Guide to Doctor Who , Marc Schuster and Tom Powers deemed
7426-449: The serial's co-writer Terrance Dicks the previous day, Dicks was "absolutely certain" that Sherwin created the Time Lords for the serial, although Sherwin could not remember himself. Later in the commentary, Dicks recalled Sherwin telling him in the discussions with Dicks and Dicks' fellow co-writer Malcolm Hulke that because the Doctor had always been established as being on the run from his own people, that if he has to appeal to them,
7520-564: The series in Warriors' Gate , along with John Leeson who returns to voice the robot K9 . With the arrival of Adric, this season marks the first time since 1967 that the Doctor has three regular travelling companions in the TARDIS. Peter Davison makes his first appearance as the Fifth Doctor in the closing moments of Logopolis . The Master returned to the show, this time played by Geoffrey Beevers , in The Keeper of Traken . After
7614-406: The show until 1989, and the first to feature script editor Christopher H. Bidmead . The season features a trilogy of connected serials, Full Circle , State of Decay , and Warrior's Gate , which form a trilogy set in a "bubble universe" called E-Space, as well as The Keeper of Traken and Logopolis , the first two serials of a trilogy continued in season 19's Castrovalva , centred on
7708-522: The show's continuity between the television movie in 1996 and the show's revival. In 2013, the 50th anniversary special " The Day of the Doctor " concerned this supposed destruction and their eventual survival. They developed a culture of custodianship and time-related technologies based on this perception which includes strictly controlled space /time travel machines (known as " TARDISes ") and monitoring devices to travel through time and to prevent time from being subverted or abused—although actual action
7802-473: The telepathic song of the Ood. When she is unable to bear the song, the Doctor removes the ability. In " The Lodger ", the Eleventh Doctor (pressed for time and needing to convey a great deal of information to someone) smashed his forehead into another person's forehead, causing a massive instantaneous transfer of information. The Doctor also contacts the Time Lords by going into a trance and creating an assembling box in The War Games . In The Two Doctors ,
7896-512: The twelve regeneration limit. The Master says in " The Sound of Drums " that the Time Lords "resurrected" him to fight in the Time War . It was revealed in The Brain of Morbius that the Time Lords also use the Elixir of Life in extreme cases, where regeneration is not possible. It is confirmed in " The Time of the Doctor " that a Time Lord can normally regenerate only twelve times but that
7990-503: The vacuum of space in " Oxygen ". Time Lords also seem to have an increased resilience to higher frequencies of sound, as seen in " The Christmas Invasion " and " Partners in Crime ". If severely injured, Time Lords can go into a healing coma which lowers their body temperature to below freezing which the Doctor did in Planet of the Daleks . In the serial Destiny of the Daleks , Romana
8084-558: The worlds were sealed. Everything became that bit less kind." In " The Satan Pit " (2006), the Tenth Doctor states that his people "practically invented black holes. Well, in fact, they did." Both the Beast (in "The Satan Pit") and the Doctor (in "The Sound of Drums" and " The Doctor's Wife ", 2011) believe the Doctor ended the War by killing all of the Time Lords and many of the Daleks. The Tenth Doctor's artificially created "daughter" Jenny
8178-429: Was "focusing on a dress size", but subsequently weighed herself, seeming unsure of how her new body had truly developed. The Doctor said on several occasions he wished he was "ginger", which he has seemed unable to control in previous regenerations. In " Last of the Time Lords ", when the Master is fatally wounded, he chooses not to regenerate, essentially committing suicide rather than regenerate and be kept prisoner by
8272-533: Was able to voluntarily stop both of her hearts beating, to fool the Daleks into believing that she was dead. The Doctor also shows a greater tolerance to cold compared to humans in The Seeds of Doom and " Planet of the Ood " and even Romana in The Ribos Operation , and in " 42 ", the Tenth Doctor states he is able to survive at absolute zero for a short period of time. In " World War Three ",
8366-849: Was also released as part of the Doctor Who DVD Files (issue 46) in October 2010. On 18 March 2019, Season 18 was re-released on Blu-ray, and given a new CGI option, including newly filmed shots filmed on location at Lovell Telescope . Fathom Events , in conjunction with the BBC, broadcast Logopolis to select cinemas in the United States on 13 March 2019, ahead of the planned Blu-ray release of Season 18 on 19 March 2019. The broadcast included additional interview footage with Baker, Fielding, and Sutton. Doctor Who (season 18) The eighteenth season of British science fiction television series Doctor Who consisted of seven four-episode serials broadcast from 30 August 1980 with
8460-461: Was billed second. According to Christopher Bidmead, the Logopolitans employ a hexadecimal , or base-16, numerical system, a real system commonly used in computer programming. When Adric and the Monitor read strings of numbers and letters, the letters are actually the numbers between 10 and 15, expressed as single digits. The police box around which the Doctor materialises the TARDIS in Part One
8554-412: Was described as rare in practice due to their traditional policy of strict non-interference and neutrality. They can act to manipulate timelines of a wide range of events and individuals, so long as they do not cross back into their own timeline. Over subsequent episodes their history, their development of time manipulation, and their internal politics were touched upon, with Time Lord society portrayed as
8648-789: Was intended to be that located at the Barnet bypass, being at the time one of the last police boxes in the Metropolitan Police District still in its original location, though it had ceased functioning in the 1970s. Logopolis was repeated on BBC2 in November/December 1981, as part of "The Five Faces of Doctor Who". Stripped across four consecutive evenings from Monday to Thursday 9–12 November 1981, with viewing figures of 4.4, 4.6, 4.6 and 4.5 million respectively. Paul Cornell , Martin Day , and Keith Topping wrote of
8742-658: Was lying about at least some of this information to mislead the Sontarans . At the beginning of The Trial of a Time Lord , the Sixth Doctor suggests that a number of elder Time Lords were able to use their combined mental energy to summon his TARDIS against his will. In the episode " Cold Blood ", the Eleventh Doctor experiences excruciating pain when the Silurian attempts to decontaminate him of surface bacteria. The Doctor states this would kill him, most likely due to
8836-411: Was the last time, for the next 24 years, the lead character was listed in the credits as "Doctor Who" (thus making it the only time Peter Davison was credited as "Doctor Who"). Beginning with the next story, Castrovalva , until the series's cancellation in 1989, the character was credited simply as "The Doctor". The 1996 television film did not have an on-screen credit for the Eighth Doctor , but listed
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