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- Gharman tries to convince the Kaleds to vote against the Dalek project but Davros has a trick up his sleeve, while the Doctor works to destroy the tape recording of Dalek victory and the Thals plan an intervention of their own.
- The TARDIS is drawn to the planet of the Time Lords where both the Doctor and the War Lord are placed on trial.
- The Doctor and his companions are sent to the planet Skaro by the Time Lords to prevent the creation of the Daleks.
- The Doctor and Harry are taken to the Kaled bunker where Davros is preparing to demonstrate the Daleks, while Sarah is captured by the Thals and taken to their city as a slave worker.
- The Doctor fails to prevent the Thals from destroying the Kaled city but they don't have long to enjoy their victory before the Daleks attack.
- The Doctor is forced to give Davros full details of future Dalek victories but opposition to Davros' plans is growing among the Kaleds and soon there is open rebellion.
- Count Scarlioni reveals his true form as Scaroth, the last of the Jagaroth and uses his time machine to go back in time and rewrite history. The Doctor, Romana and Duggan take to the Tardis in a race against time to stop him.
- Chellak and his men attack Jek's base. The Dr. crash-lands the ship, and must escape from his captors to find the antidote to the Spectrox poisoning and save Peri. He does so, but at a staggering cost.
- Count Scarlioni has the Doctor, Romana and Duggan locked in his basement but the trio manage to escape and learn of the Count's experiments with time travel. Even more surprising are his multiple genuine copies of the Mona Lisa.
- While sightseeing in Paris, the Doctor and Romana find themselves repeatedly reliving the same moments in time. A visit to the Louvre Museum leads the Doctor to suspect an alien plot to steal the Mona Lisa.
- The Doctor and Harry head to the Kaled city to alert the authorities to Davros' plans while Sarah and Sevrin are forced to work on the completion of the Thals' rocket.
- To prove his loyalty to the Aliens, the Doctor is ordered to reprocess his friends while the Security Chief finally uncovers evidence of the War Chief's treachery.
- Travelling back in time to 1505 Florence in search of Leonardo da Vinci, the Doctor is surprised to instead find Count Scarlioni under a different name. Back in 1979, Romana and Duggan attempt to stop the Count's heist but arrive too late.
- The Doctor and Leela land in Victorian London, and find themselves in the middle of missing girls, mutilated bodies, and vicious Chinese gangs. The Palace theater, presenting hypnotist Li H'sen Chang seems to be at the center of it all.
- Tegan is captured by the Cybermen, allowing the Cyber Leader to use her as a hostage and force the Doctor to do his bidding. Left behind on the ship, Adric attempts to prevent it from plummeting to Earth as time is running out.
- The real face of Weng-Chiang is revealed as the Doctor, Leela, Jago and Litefoot face their final battle against both Magnus Greel and a trigger-happy Mr Sin.
- After escaping the vicious Magma creature, the Doctor is made a prisoner of the gun runners and taken to Androzani Major. The real Salateen takes an ill Peri back to Chellak.
- The Doctor and Sarah are drawn off course and, instead of UNIT HQ, they arrive on the same site in 1911.
- Members of the World Ecology Bureau discover a centuries-old seed pod buried deep in Antarctica's permafrost. It seems to be still alive, growing without soil. They transmit a photo to London where Richard Dunbar of the W.E.B. shares it with the Doctor. Wary of what it might be, the Doctor immediately flies down with Sarah. They don't know that Dunbar is a leak in the bureau and has tipped off the discovery to a rich plant fanatic named Harrison Chase. Chase sends a thug and a plant expert down to verify the discovery and fetch it back by any means possible. But before anyone arrives, the pod hatches and the tendril-like life form within attaches itself to one of the men, turning him green. It's as The Doctor feared: they're dealing with a Krynoid.
- With the Daleks poised to invade the solar system, the Doctor decides his only option is to activate the Time Destructor prematurely, threatening the entire planet.
- With secrecy no longer necessary for the robot revolution, Controller Taren Capel shuts down all friendly robots and gives the remaining humans an ultimatum, or else their deaths will be slow and painful. With no conventional weaponry aboard their commercial vessel, the humans do what they can to resist while giving the Doctor time to work out a permanent solution.
- With a killer Krynoid on the loose, the Doctor, Sarah and the last surviving member of the expedition concentrate on hunting it down, unmindful of Chase's men who, once they learn of the second Krynoid pod (which always travel through space in pairs), work to obtain it and eliminate all possible witnesses.
- In the interest in self-preservation, Chase's men side with The Doctor against the Krynoid, but the Krynoid - now bigger than the Chase Mansion - invites The Doctor to join it, promising to leave the others alone if he does. People within a mile of the Chase Estate, however, start getting strangled by their plants, while Chase, snapping photos of the Krynoid, has a significant one-on-one encounter with it.
- Chase is obviously under Krynoid control. The Doctor suspects possession but, with the mountainous Krynoid nearing maturity and whacking the mansion to pieces, he concerns himself with the bigger picture and orders the mansion - with Sarah and him still inside - to be bombed.
- After escaping from the vicious giant rat in the sewers, the Doctor & Leela team up with Litefoot. Chang, Mr Sin and Weng-Chiang go in search of the time cabinet, while the Doctor and Jago go in search of Chiang's lair.
- 1963–198922mTV-Y8.5 (641)TV EpisodeLeela follows Chang in order to find Greel's hideout while the Doctor and Litefoot set about finding her.
- 1963–198925mTV-Y8.5 (636)TV EpisodeHaving rescued Leela from the jaws of the giant vicious rat, she & the Doctor dress up and attend Chang's show at the palace, but end up as part of the act. At home, Litefoot tries to protect the time cabinet.
- 1963–198925mTV-Y8.5 (632)TV EpisodeWeng-Chiang has stolen the time cabinet from Litefoot's house, so the Doctor and Leela go to try and stop him from using it. They find an opium-drugged Chang. Jago teams up with Litefoot for their own investigation.
- Sutekh forces the Doctor to transport Scarman and a mummy to Mars, where the Doctor and Sarah try to stop them destroying the Eye of Horus.
- 1963–198925mTV-PG8.5 (656)TV EpisodeThe Imperial Dalek Emperor reveals himself to be an old, familiar adversary of the Doctor. Now with the Hand of Omega, the Imperial Daleks expect to rule over both time and the Time Lords. The only snag in the Doctor's plan to thwart this may come from the fascist mole in Gilmore's unit - discovered and detained but escaped to cause mischief, putting both Ace's life and the Doctor's plan at risk.
- 1963–198925mTV-PG8.4 (771)TV EpisodeThe Doctor and Ace travel back to London in November 1963 and are caught in the middle of a Dalek civil war.
- The Doctor and Peri get involved with drug running after landing on the twin planet of Androzani Minor and getting arrested as gun runners and targeted for execution. Not before Peri stumbles into some highly toxic and lethal plant life.
- A mysterious evil is at work on Gallifrey. The President of the Time Lords has been assassinated and the Doctor caught red-handed. An inexorable master plan has been set in motion. There can be no escape
- The Doctor, Jamie and Zoe realise they have arrived in the trenches of the First World War, where the sinister General Smythe accuses them of espionage.
- The Daleks are poised to spread the Dalek Factor throughout the history of Earth and begin by implanting the Doctor.
- The Doctor finds himself in a parallel universe where Britain is a dictatorship and the Inferno Project is a slave labour camp policed by his friends' counterparts.
- With the parallel earth doomed, the Doctor asks his friends' counterparts to help him return to his own world but the Brigade Leader only sees the TARDIS as a means of escape.
- As the strangulations continue and the humans aren't sure who to blame, Leela meets up with an anomaly among the robot crew - an inquisitive, supposedly mute single-function labor robot capable of independent reasoning. Meanwhile the Doctor starts looking into the possibility that the murderer is a robot, and another crew member is targeted for death.
- Hearing about a man who grew up only around robots and who has threatened to start a robot revolution, and who may be aboard the sandminer under an assumed name, the Doctor takes D.84 to seek out a possible secret workshop where he would be restructuring robot programming. Meanwhile, as one crew member suffers a complete mental breakdown, reprogrammed robots are ordered to kill all remaining humans.
- Surviving two attempts to end their lives, the Doctor and Sarah seek the identity of the plant fanatic who ordered the hit on the arctic base, pursuing their only lead - a commissioned painting of a rare flower left in the boot of a car. Chase, meanwhile, is doing all he can to encourage the hatching of the Krynoid pod.
- Sarah is saved from a Krynoid fate and runs off, but the same can't be said for one of Chase's men. Not only is he simultaneously devoured and transformed, his fascinated employer will do all he can to encourage the process. The Doctor gets introduced to Chase's grinder and compost acceleration chamber, which promises him a painful yet swift death en route to making him one with nature, via the garden's nutrient pump. The situation has finally gone too far for Dunbar, who outs his own involvement in this matter and stands up to Chase, only to come face to face with a fully developed Krynoid.
- 1963–198925mTV-PG8.4 (654)TV EpisodeWith two factions of Daleks involved in a race war on Earth, the Doctor takes care of old business by having the Hand of Omega ceremoniously but quietly buried in a churchyard. His actions do not go unobserved, and leaving behind a bored Ace without a purposeful outlet could spell trouble as well.
- 1963–198925mTV-PG8.4 (648)TV EpisodeThe Doctor plans to let one of the Dalek factions have the Hand of Omega (but not too easily, of course) while keeping Gilmore and his military men preoccupied in a safe territory, but that plan could be threatened by a mole in their midst and a miscalculation on the Doctor's part.
- Having been saved from execution by Sharez Jek and his androids, Jek takes a shine to Peri, and wants her with him forever. Salateen tells the Dr and Peri that they are dying from Spectrox toxemia, but there is an antidote.
- The Doctor realises the Master is planning to tap into the Time Lords' power source to extend his own life, an act that will destroy all Gallifrey.
- The Tardis materializes aboard a mining ship on a desert planet, inhabited by a human crew and their robot servants. While Leela adjusts to life travelling with the Doctor, one of the ship's robots mysteriously kills a member of the crew.
- The Daleks' plan to transform Earth into a giant spaceship and wipe out its inhabitants is nearing completion and the Doctor and his friends face a race against time to prevent them from destroying the planet's core.
- The Doctor is back in his own universe and must stop Stahlman before his earth suffers the same fate as the parallel one.
- The Doctor and Zoe manage to escape from Ransom and attempt to rescue Jamie from the military prison.
- The Doctor and his friends realise the area is divided into different time zones and decide to return to the château to obtain a map from Smythe.
- The Doctor and the processing machine have been taken by the Aliens but the resistance are making plans to attack the control centre.
- The Doctor, Sarah and Laurence try to find a way to sever Sutekh's link to the mummies while poacher Ernie Clements finds the priory surrounded by a forcefield.
- The Doctor and Sarah try to destroy Sutekh's rocket but the Osiran's mental powers prove too great for them.
- Morbius goes on the rampage, forcing the Doctor and Solon to team up to try and bring him back under control.
- The Doctor is arrested for the President's murder and struggles to avoid his immediate execution.
- The Doctor battles the assassin inside the matrix dreamscape, while the Master tries to bring about his death in the real world.
- The Tardis lands in a spaceship graveyard on the bleak planet Karn, where The Doctor and Sarah find a evil scientist called Doctor Solon is constructing a new body for the brain of an evil Time Lord known as Morbius, who The Doctor thought was executed by the High Council on Gallifrey. Morbius plots to rule the galaxy with his new body.
- In the midst of an argument between Adric and the Doctor, the Tardis materializes underground in Earth's distant future where a team of paleontologists and geologists find themselves under attack from a pair of androids.
- The Doctor's attempt to give Harry a trip in the TARDIS sees the two of them and Sarah arriving onboard a space station in the far future, with some rather deadly security mechanisms.
- The 10th Anniversary Serial has three incarnations of the Doctor meeting up to face the evil Omega in a universe of antimatter.
- 1963–198924mTV-PG8.2 (881)TV EpisodeThe Doctor, Jamie and Victoria arrive on Telos, where an archaeological group are exploring the Tomb of the Cybermen. But are the Cybermen as dormant as they believe?
- The TARDIS becomes trapped in space before ending up in an underground station of a mysteriously deserted London.
- 1963–198924mTV-G8.2 (557)TV EpisodeWith Polly being held prisoner by the rebels, the Doctor and Ben decide to investigate them, while Lesterson discovers the Daleks are reproducing.
- 1963–198924mTV-G8.2 (571)TV EpisodeWith Bragen having taken over, the Daleks trick the rebels into turning them loose and only the Doctor can stop them wiping out the entire colony.
- The Doctor attempts to convince the alternate Inferno staff that penetrating the earth's crust will cause a disaster but instead is imprisoned with an infected Bromley.
- The earth's crust has been penetrated and, while the Doctor and Greg try to contain the disaster, the Doctor begins to realise the planet has passed the point of no return.
- The Doctor attempts to destroy the giant maggots and cure Cliff but the real threat is BOSS, who is poised to take over all the world's computers.
- The Doctor attempts to rescue Zoe and Carstairs while Jamie and Lady Jennifer try to convince the resistance of the true nature of Von Weich and the others.
- With Travers having been captured by the Yeti, the Doctor attempts to find a way to gain control of the robots while Lethbridge-Stewart tries to recover the TARDIS.
- With UNIT's investigation being blocked by the Replica of Scobie, the Doctor and Liz visit Madame Tussaud's to try and find out more as Channing prepares to activate the Autons.
- Omega reveals the purpose behind bringing the Doctor to his antimatter world, but the Doctor(s) discover a startling fact about Omega that he didn't know himself and eventually strike a bargain.
- 1963–198925mTV-PG8.2 (762)TV EpisodeThe archaeologists learn they are stranded on Telos and Klieg suggests they use the opportunity to explore the Cybermen's tombs.
- 1963–198924mTV-PG8.2 (747)TV EpisodeKlieg attempts to do a deal with the Cybercontroller while the Doctor tries to find a way to refreeze the Cybermen permanently.
- Aboard the freighter, the Doctor and Adric are taken prisoner by Captain Briggs. The Doctor looks on in fear as his old foe, the Cybermen, begin to take over the ship in large numbers.
- The Sisterhood prepare to sacrifice the Doctor to the Sacred Flame and Sarah is injured while rescuing him.
- The Doctor attempts to restore the Sacred Flame to prove his good intentions to the Sisterhood, while Solon prepares to connect the brain of Morbius to his body.
- Fenric is loose and planning to use the Ancient Haemovore to poison the Earth with chemicals, unless the Doctor can defeat him in their centuries old game.
- The Doctor and his previous incarnations are brought to the Death Zone on his homeworld Gallifrey as part of a renegade Time Lord's scheme.
- Two schoolteachers investigate the personal life of one of their brilliant students and her mysterious grandfather.
- The TARDIS lands near an isolated rocky island lighthouse just after a comet strikes the nearby sea and a sudden chilling fog rolls in. Soon after, electrical problems take hold of the generator and one of the keepers dies mysteriously.
- The Doctor and UNIT investigate strange happenings at a top secret government drilling project headed by the pompous Professor Stahlman.
- As the newly regenerated Doctor arrives on Earth, so does the Nestene.
- The Doctor, Sarah and Harry return to Earth in response to an emergency space-time telegraph from the Brigadier, who asks them to investigate the destruction of a series of North Sea oil rigs.
- The Doctor and Ace travel to a naval base off the coast of Northumberland towards the end of World War II, where the Time Lord and his companion become entangled in an old Viking curse.
- 1963–198926mTV-G8.1 (630)TV EpisodeThe TARDIS arrives on the Earth colony of Vulcan where the newly-regenerated Doctor assumes the identity of an Earth Examiner.
- The Doctor finally discovers what the Monk is up to and must move fast to prevent his opponent from altering the course of history.
- The Doctor and Jamie investigate Waterfield's antiques shop, where they are knocked unconscious and transported back to the 19th century.
- The Doctor, Jamie and Waterfield follow the Daleks to Skaro, where they discover an unforeseen consequence to their experiment.
- 1963–198924mTV-G8.1 (564)TV EpisodeWhile the Doctor worries about the inert Daleks in the capsules, Lesterson makes plan to reactivate one of them.
- The Cybermen take over the base again, apparently to stop the humans using the Z-Bomb, but then the Doctor realises they intend to use it themselves to destroy Earth.
- K'Anpo persuades the Doctor he must face his fear and return the crystal to the Great One.But first they need to get past Barnes and his men.
- The Doctor and Harry revive the Ark's medtech, Vira, to help Sarah.But when station commander Noah is revived, he becomes suspicious of the newcomers.
- The Doctor tries to protect the humans still in cryogenic suspension from the Wirrn, who are determined to use Earth as their new breeding ground.
- The Doctor discovers the true link between Salamander and Kent while Astrid tries to convince the shelter inhabitants they have been lied to.
- Captain Turner manages to rescue Jamie and the others, while the Doctor begins working on a way to protect everyone from the Cybermen's hypno-sound signal.
- The Cybermen are here to take over the world, and for the first time, UNIT are here to deal with the threats of a global invasion of a very alien and robotic kind. With locations shots of a nineteen sixties London to enhance realism and a new and fresh, contemporary look for the Cybermen, these episodes were considered a landmark and turning point in the Doctor Who franchise that has a sinister industrialist working in league with the dreaded Cybermen. It is now up to the Doctor and the United Nations Intelligence Taskforce to thwart their plans in eight new exciting and action filled chapters'.
- The Doctor and Zoe are transported to the control centre of the war games while Jamie and Lady Jennifer fall foul of American Civil War soldiers.
- The Doctor, Jamie and Carstairs manage to return to the 1917 zone only to be captured by Smythe, who orders the Doctor executed.
- The Doctor and his friends are held prisoner by the Intelligence and their only hope lies with Jamie, Arnold and a reprogrammed Yeti.
- The third Doctor and Jo find themselves on an artificial world inside the black hole while the second Doctor tries to find a way to control the organism.
- The Time Lord Omega reveals himself to the third Doctor along with plans for vengeance against his own kind.
- 1963–198924mTV-PG8.1 (749)TV EpisodeThe Cybermen have been revived and plan to convert the archeologists into their own kind, prompting Hopper to attempt a rescue.
- A death scream is heard, yet all are accounted for. Eventually the Doctor finds a body stashed away but hours old, with rigor mortis already settling in, which means there's a chameleon in their midst. Completely cut off from the rest of the world and with an escalating body count, the Doctor wonders just what, exactly, he's locked inside the lighthouse with them all.
- With little to fear, and its mother ship about to land and turn Earth into an alien attack base, the electrically charged Rutan scout drops its human guise and attacks openly.
- The Zygon traps the Doctor and Sarah in a decompression chamber while Harry is taken to the aliens' underwater ship.
- The Doctor and the Brigadier begin to realise who the Zygon imposters among them are while Sarah discovers a secret tunnel to the underwater ship.
- The Doctor and Ace manage to convince Sorin to release them while Millington and Judson attempt to translate the Viking runes.
- The Doctor and his friends come under attack from the Haemavores, allowing Millington to retrieve the flask containing Fenric's essence.
- Ian and Barbara believe the TARDIS has finally returned to their contemporary London, but soon discover signs of plague and warfare. Their old enemies, the Daleks, have invaded the Earth of the 22nd century. Separated and fighting for their lives, the travelers must try to aid the remaining humans and overthrow the Daleks' cruel tyranny. (Originally broadcast in six parts.)
- The Brigadier asks the Doctor to investigate the disappearance of several scientists, only for him to find they have been abducted back in time.
- The Doctor and Ian are taken to the Dalek saucer while Susan and Barbara join the rebels in planning an attack.
- With Katarina being held hostage, the Doctor, Steven and Bret are in danger of having to given in to Kirksen's demands, while, on Earth, Chen has them listed as traitors.
- 1963–198924mTV-G8.0 (561)TV EpisodeThe Doctor fails to convince the colonists of the danger posed by the Daleks and soon the other two are also reactivated.
- 1963–198924mTV-G8.0 (551)TV EpisodeThe Doctor and Quinn attempt to escape in order to stop Bragen using the Daleks to take over the colony.
- 1963–198923mTV-G8.0 (631)TV EpisodeWhile Liz distributes the cure to the virus, the Doctor discovers the Silurians now plan to wipe out humanity by destroying the Van Allen Belt.
- The Doctor begins to suspect that penetrating the earth's crust will create more Primords but Stahlman sabotages the computer to stop him proving it.
- Knowing that Noah has been infected by the Wirrn, the Doctor persuades Vira to halt the reviving of her people, knowing it will place them in danger as well.
- With the entire world unconscious apart from the Doctor and his friends, the Cybermen are poised to invade and only Zoe, the Brigadier and a missile crew can stop them.
- The scientist examines the captured resistance fighters and realises Jamie is a new arrival on the planet while the Doctor, Zoe and Carstairs try to rescue their friends.
- Jamie and Victoria are reunited with Travers before Jamie joins the soldiers in attempting to find out what has happened to the Doctor.
- Victoria and Travers are held prisoner by the Great Intelligence, who is planning to drain the Doctor's mind.
- UNIT's attempts to locate the meteorites are hampered by the mysterious plastic Autons, being constructed by Channing at a nearby factory, while the Doctor makes another attempt to escape from the hospital.
- Ransome manages to escape from the plastics factory and alert UNIT, prompting the Doctor and the Brigadier to start an investigation.
- Disposing of the androids, the Doctor and Adric must deactivate a bomb that they unknowingly triggered. Setting off in the Tardis to find the culprits, they arrive aboard a freighter ship while the Cybermen watch their old enemy from afar.
- With inexplicable electrical problems keeping the lighthouse from maintaining a steady beam, a foolhardy ship crashes against the island rocks. Four shaken and discontent survivors join the people inside where the Doctor surmises they're all being carefully scrutinized, a prelude to an attack.
- UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.
- After the Doctor is attacked by a group of mysterious gunmen, he discovers he is the physical double of the famous scientist Salamander.
- While the Doctor plans a holiday to Metebelis Three, Jo and the Brigadier are intrigued by a mysterious death at a coal mine in Llanfairfach, which is being blamed on local company Global Chemicals.
- The TARDIS arrives in a white void after making an emergency escape from the volcanic eruption on Dulkis.
- The Doctor manages to escape from the Dalek saucer and meet up with Susan and David but Ian is left trapped onboard. Meanwhile, Barbara and her new friends face a dangerous journey across London.
- The Doctor and the Brigadier attempt to rescue Jo and Bert from the mine but Global Chemicals prove distinctly uncooperative.
- The Doctor and Jo manage to escape from the mine with a maggot egg but Stevens is determined to stop them analysing it.
- The Brigadier calls in a full UNIT force to deal with the giant maggots while the Doctor infiltrates Global Chemicals to find out what is really going on.
- The Doctor manages to escape from BOSS with help from Yates and discovers Cliff has been infected by a giant maggot.
- The Doctor and Jamie are taken prisoner by their mysterious observers and have a reunion with an old friend while Zoe and Isobel carry out their own investigation of IE.
- The Doctor and Jamie enlist the help of UNIT to rescue Zoe and Isobel before trying to find out what Vaughn is really up to.
- The Doctor and Jamie tell the Brigadier about the Cybermen but with Rutledge under Vaughn's control he is powerless to act.
- The Doctor tracks the missing scientists to Irongron's castle, where Linx is using them to repair his spaceship and construct advanced weapons for Irongron.
- The Doctor escapes the castle with Sarah and Hal and must persuade Sir Edward to trust him before Irongron launches an attack on them.
- The Doctor attempts to return the scientists to their own time, before Linx tries to use his spaceship and destroys the entire castle.
- Forced to work together to save the universe from collapsing, the Doctor, the Master and Tegan use the Master's Tardis to travel to a giant satellite dish on Earth. Meanwhile Adric and Nyssa are taken to safety by the mysterious Watcher.
- The Doctor runs afoul of the Daleks and Special Security Agent Bret Vyon on the planet Kembel.
- The Doctor and Jo race to the village of Devil's End to prevent what the Doctor believes could be a disaster. With a midnight excavation due to take place, mysterious events are happening - not helped by the Reverend Magister.
- Trying to find the stolen TARDIS, the Second Doctor and Jamie are lured into a trap by the Doctor's old enemies the Daleks.
- The Doctor and the newly formed UNIT must stop a Cybermen Invasion and a Sinister Industrialist in league with them
- The Doctor infiltrates the Daleks' conference to try and discover their plans, leaving Steven, Katarina and Bret to find a way off the planet.
- The Doctor's warnings are ignored and the Cybermen take over the base, hampering the crew's efforts to help Zeus IV.
- 1963–198924mTV-G7.8 (626)TV EpisodeWhile the Doctor and Liz try to find a cure to the virus spread by Baker, the Young Silurian kills the Old Silurian and takes control of his people.
- The Doctor and Jamie rescue Victoria from Robson and realise they can destroy the Weed Creature with sound waves.
- The Doctor persuades Bruce to help him infiltrate Salamander's research centre while Salamander takes drastic action to prevent Swann finding out the truth.
- The Doctor and Jamie return to the IE factory in search of Zoe and Isobel, where they meet with Professor Watkins and fall foul of Vaughn.
- The Doctor and Victoria are taken back to the Goodge Street base by Colonel Lethbridge-Stewart where the Doctor becomes convinced there is a traitor in their midst.
- The guerrillas infiltrate the Daleks' base to rescue the Doctor and Jo and ask them to return to their own time and alter history before the 20th century is plunged into a Third World War.
- With the TARDIS destroyed, the Doctor, Jamie and Zoe find themselves in a strange forest patrolled by mysterious soldiers.
- With Jamie and Zoe having been turned into fiction, the Doctor must find a way to save them without suffering the same fate or becoming part of the Master Brain.
- Captain Striker and his officers reveal themselves to be Eternals, mind-reading creatures who live outside of time and who require Ephemerals (humans and other "time dwellers") to relieve them of their emptiness. They race against other Eternals for the grand prize of Enlightenment, by which to grant their deepest wishes. That can't be good for the universe, but how can the Doctor strategize against beings adept at reading his every thought?
- As the race nears it's end and the Black Guardian's victory seems all but certain, his counterpart, the White Guardian offers Turlough one final choice.
- The Doctor and Sarah attempt to get Eldrad to the regeneration chamber but Rokon has left traps in their path.
- With the merciless Melkur in control of The Source, the Doctor and his allies have only a slim chance of deposing him, which also puts the peace of the Traken Union in severe jeopardy.
- The Doctor and Kimus head to the Bridge to try and rescue Romana, leaving K9 and Mula to search for Pralix.
- The Mentiads take the Doctor, Romana and Kimus to a reunion with K9 and Mula, where they set about trying to defeat the Captain's plans.
- The Doctor reveals the truth about the real power on Zanak and must try and stop the Captain and Xanxia before Earth becomes their next victim.
- In 1983 the Doctor is once again reunited with his old friend Brigadier Lethbridge-Stewart, only the Brigadier struggles to remember his adventures with the Doctor. Meanwhile Tegan also meets the Brigadier in 1977.
- 1963–198947mTV-G7.8 (489)TV EpisodeWhile Davros looks into solving a small problem offered up by the Movellans, the Daleks have not overlooked the Time Lords for all their years of interest and attention paid them, hoping to make of the Doctor and his companions emissaries of their appreciation, in order to thank them all to the fullest and permanently.
- The Doctor attempts to test his new dematerialisation circuit by taking Jo to Metebelis Three but instead the TARDIS arrives in the hold of a 1920s cargo ship.
- The Doctor is in a race with the clairvoyant Eternals for the prize. When the Black Guardian appears, though, the Doctor is suddenly in a race for his life!
- Preparing to overhaul his TARDIS, the Doctor goes to Earth to take fresh measurements of a police box. A figure in white observes, as the Master lies in wait with a puzzling predicament for his rival Time Lord.
- Can the Doctor, now in his fourth incarnation, recover from his post-regenerative trauma to save the Earth from Think Tank and their plot for world domination?
- The TARDIS lands in a petrified forest on an alien planet. Determined to explore, the Doctor leads his companions into the metal city, where they discover the danger of what will become his deadliest enemies, the mutant Daleks. (Originally broadcast in seven parts.)
- The Tardis is drawn towards Traken, a harmonious planet. The Keeper of Traken appears inside the Tardis to warn the Doctor and Adric of his nearing death and of an evil being known as Melkur that threatens Traken's peaceful ways.
- The Doctor and Jo visit the Master at his island prison where the Doctor becomes curious about a number of ships sinking in the area.
- The TARDIS arrives on a planet that has been turned into a space museum but the Doctor and his friends are puzzled when they find themselves out of phase with their surroundings.
- In December 1986, a new planet appears in the Solar System which turns out to be a long-lost twin of Earth's named Mondas. Its inhabitants are the Cybermen.
- The Doctor, Vicki, and Steven Taylor, go to 1066 England, but something doesn't seem right including modern inventions like a Gramaphone and electricity. Could there be another time traveller?
- The Doctor manages to escape from his cell and get the upper hand on the Monk but his plans are derailed when Sven and Ulf arrive at the monastery.
- While Susan and David try to find a way out of London, Ian and Larry infiltrate the Dalek mine workings.
- The Doctor and his friends are taken into the Mechanoid City but their troubles are far from over...especially when the Daleks launch an attack.
- The Doctor's party investigate the Daleks' central control in Bedfordshire while Barbara and Jenny's attempt to reach it are derailed when they are betrayed.
- Susan meets Alydon of the Thals and agrees to try and arrange a treaty between his people and the Daleks. But the Daleks only see it as an opportunity to wipe the Thals out.
- The Doctor, Steven and Sara escape Mira in a Dalek pursuit ship but when they find the ship is returning to Kembel, they are forced to come up with a new plan to avoid the Daleks.
- The Doctor, Steven and Sara reach Kembel where they find the Daleks have betrayed their allies and imprisoned them.
- With the experiment at an end, the Doctor begins to suspect the key to rescuing Jamie, Victoria and Kemel from the Daleks lies with Terrall.
- The Doctor and Jo attempt to find a way out of the Scope but, when Vorg attempts to entertain the Minorans, the crew of the Bernice suddenly become a lot more dangerous.
- 1963–198924mTV-PG7.7 (576)TV EpisodeThe Doctor escapes from the Scope and joins forces with Vorg to try and save its inhabitants but Kalik is still determined to use the Drashigs to start a rebellion.
- 1963–198925mTV-G7.7 (623)TV EpisodeWith Quinn dead, the Brigadier decides to take an armed party into the caves, prompting the Doctor to contact the Silurians himself.
- 1963–198924mTV-PG7.7 (617)TV EpisodeWorried about the Old Silurian's growing friendship with the Doctor, the Young Silurian has the scientist infect Baker with a virus and then release him.
- While the Doctor begins his investigation into the weed creatures, Robson is attacked by one at the refinery.
- With the Weed Creature poised to burst out of the pipeline and attack the base, an encounter with Oak and Quill gives the Doctor a vital clue about its weakness.
- The Master orders Bert to set a trap for the Doctor at the village while a concussed Jo makes for the cavern.
- The Master decides to sacrifice Jo to Azal and when the Doctor and his friends try to intervene they come under attack from Bok.
- Jamie and Victoria agree to accompany Astrid to Hungary to observe Salamander's activities.
- Fariah brings the Doctor and Kent evidence of Salamander's activities but then they come under attack from Benik.
- The Doctor and Jo are trapped on the fort by a Sea Devil while the Master convinces Trenchard to help him steal some electronic components.
- The Sea Devils take over the naval base and the Doctor is forced to help the Master find a way to revive their colony.
- The Doctor realises that the travelers are trapped in a world where fiction is real and where creatures are a threat if people believe in them.
- Jumping overboard to escape the Black Guardian, Turlough lands on the Buccaneer, a pirate ship captained by the ruthless Captain Wrack who invites her rival Eternals aboard her ship to eliminate them from the race.
- Eldrad uses the energy from the reactor to regenerate herself and tries to force the Doctor and Sarah to take her back to Kastria.
- Rumford arrives just in time to save the Doctor from being sacrificed, allowing him and K9 to rescue Romana from the cliff face but he is confused when she claims that she was pushed by someone who looked just like him.
- Adric, Nyssa and Tegan aid the Monitor in saving the Doctor after he is trapped inside his shrunken Tardis. The Master, posing as Nyssa's father Tremas, makes his presence known on Logopolis as his plan nears it's completion.
- Mawdryn presents the Doctor with an ultimatum; give up his remaining regenerations or leave the ship and suffer the consequences. Meanwhile Turlough's stupidity puts the two Brigadiers at risk of meeting, angering the Black Guardian.
- 1963–198945mTV-PG7.7 (514)TV EpisodeThe Davros running Tranquil Repose has only been a figurehead - literally just a head, created and animated by Davros himself. Now, the real Davros wheels forth to face the Doctor, but his own immoral dealings have fostered an uneasy surrounding situation, riddled with treachery, that only a few might escape.
- The Doctor, Susan and Ian search the city for Barbara and learn that the area is contaminated with radiation.Then they encounter the Daleks.
- When someone tries to assassinate diplomat Sir Reginald Styles, UNIT investigate the possibility his attacker came from the future.
- The Doctor, Jamie and Victoria are taken prisoner by the staff of a gas refinery, who have lost contact with their drilling rigs and experienced mysterious drops in pressure.
- 1963–198946mTV-PG7.6 (545)TV EpisodeA time corridor forces the Doctor to the London docklands on present-day Earth where a bomb squad watches over some strange, alien canisters. At the other end, a battle cruiser launches an assault on a prison space station that holds just one prisoner - Davros, creator of the Daleks.
- When a Nestene Energy Unit is stolen and a radio telescope sabotaged, the Doctor is contacted by a Time Lord who tells him his old rival the Master is responsible.
- The Doctor and Sarah return to Earth in the present day to find a strangely deserted village and woods stalked by white-clad figures.
- Travelling alone, the Doctor lands on a nameless planet in the far future where he meets a warrior woman named Leela, recently banished from her tribe, the Sevateem who recognise the Doctor as the "Evil One" and wish to destroy him.
- The Doctor and Sarah arrive in a quarry during blasting operations and when Sarah is buried under rubble, she discovers a stone hand.
- In seeking the second segment of the Key to Time, the TARDIS heads for an icy world but lands on a populated planet that shouldn't be there.
- 1963–198924mTV-G7.6 (723)TV EpisodeThe Doctor and Liz are summoned to the Wenley Moor Research Centre by the Brigadier, after several staff members suffer nervous breakdowns.
- The Doctor and Romana's search for the third piece of the Key to Time leads them to a stone circle in Cornwall where they find signs of strange activity and meet the inquisitive Professor Rumford who tells them of a nearby sect of druids.
- The Doctor and Leela land on Pluto in the far future and discover that it's inhabited by humans. Leaving K9 in the Tardis, the pair meet a man contemplating suicide after he's unable to pay his father's "death tax".
- The TARDIS makes an emergency landing on Varos, a planet that used to be a penal colony, and where the native Varosians are presently entertained by broadcasts of real violence and death. Mistaken for rebels, the Doctor and Peri learn that Sil, an evil delegate of the Galatron mining corporation, bids to rule Varos and to control supplies of Zeiton 7 ore, which is the TARDIS's only fuel source.
- As part of the Daleks' experiment, the Doctor manipulates Jamie into attempting to rescue Victoria.
- Jamie and Kemel team up to try and find Victoria, while the Doctor and the Daleks continue to monitor their progress.
- 1963–198925mTV-PG7.6 (565)TV EpisodeThe Doctor and Jo return to the Bernice to try and aid their escape but find themselves pursued by the Drashigs.
- 1963–198923mTV-G7.6 (640)TV EpisodeThe Doctor attempts to convince people there are monsters in the caves, prompting Major Baker to start shooting at a reptile man.
- 1963–198923mTV-G7.6 (634)TV EpisodeThe Silurians contact Quinn for help in retrieving their fellow while the Doctor and the Brigadier organise a search of the moors.
- Harris asks for the Doctor's help with Maggie with Van Lutyens and the Chief Engineer attempt to find out what is blocking the impeller.
- Van Lutyens' investigation of the base of the impeller places the Doctor and Jamie in danger from the Weed Creature.
- With the Doctor frozen by the energy release from the barrow, Jo calls Yates and Benton for help, but when the Brigadier tries to join them he finds the village surrounded by a heat barrier.
- The Doctor explains to his friends that the Master is trying to gain the power of the last of the Daemons, a race who influenced Earth's development, while the Master brings the rest of the village under his control.
- The Doctor is held prisoner by Trenchard while the Master attempts to contact the Sea Devils.
- The Sea Devils attack the island prison and rescue the Master, prompting the Doctor to venture underwater to try and contact them.
- The Doctor is taken to the Sea Devils' underwater colony where he tries to make peace with the creatures, only for the navy to attack the base.
- The Doctor forces the guerrillas to take him to the 22nd century where he is soon captured by the Controller.
- Attempting to find out where Jo encountered the Master, the Doctor heads to the circus where he falls foul of Rossini.
- 1963–198924mTV-G7.6 (610)TV EpisodeThe Doctor and the Brigadier head to Farrel's factory but the Master and the Autons have already left and are distributing plastic daffodils around the country.
- 1963–198922mTV-PG7.6 (617)TV EpisodeThe Doctor discovers the plastic daffodils are designed to fire a spray that asphyxiates people, causing havoc prior to the Nestene's arrival, but before he can alert anyone he and Jo are captured by the Master.
- 1963–198923mTV-PG7.6 (408)TV EpisodeJamie and Victoria make their way to the monastery shortly before it is attacked by the Yeti.
- The Doctor, Jamie and Zoe reach the citadel at the centre of the land, where they finally encounter the Master of the Land of Fiction.
- The Doctor and Carter attempt to gain the trust of the Nunton staff before Sarah takes the hand into the reactor.
- Tremas claims counselor privilege to protect the Doctor and Adric from execution, though it binds his fate to theirs if they're found guilty of murder. Melkur strengthens his hold over Kassia while Seron decides to have rapport with The Keeper to learn truth, and Adric finds evidence of another TARDIS in the area.
- With Tremas falling under suspicion, due to his association with the Doctor, a new Keeper Nominate is named. Now, with everything in place, Melkur has only a short wait before his full malevolence can unfold.
- Assisted by Prof. Rumford and K-9, the Doctor builds a projector by which to enter hyperspace and rescue the kidnapped Romana, all of them all the while trying to avoid the bloodsucking Ogri stalking them.
- Aboard a hyperspace prison ship, two justice machines called the Megara, known for swift verdicts and harsh punishments, arrest the Doctor for breaking an infraction, with trial and execution to be carried out immediately.
- Captured by the authorities, the Doctor finds himself restrained in a Correction Centre where he's to be prepped for painful shock treatments, making him unable to return within a given time frame to the underground rebels holding Leela, who are prepared to kill her as promised.
- Attempting to start a successful revolution, the Doctor uses Pluto's Public Address System to announce successful revolution, all the while trying to determine the Collector's true species and why he, or it, seems set on taxing the life out of humans.
- Figuring out that the Master has taken over Tremas's body, the Doctor and Adric land the Tardis near the River Thames before heading to Logopolis. Meanwhile a confused Tegan wanders the halls of the Tardis looking for help.
- While Nyssa, Tegan and the 1977 Brigadier debate whether or not Mawdryn is really the Doctor in a new body, the Doctor and the 1983 Brigadier explore the spaceship as the Black Guardian uses Turlough to awaken the rest of Mawdryn's people.
- The Lords prepare to sacrifice Romana and induct Adric into their ranks as part of their plan to awaken the "Great One" and escape E-Space. Meanwhile the Doctor and K9 assist Kalmar's men in attacking the tower.
- The Doctor and his friends attempt to escape from the Dalek City. However, knowing that the Thals are walking into a trap, Ian decides to go and warn them.
- The Doctor and Jo discover the Master and the Ogrons are the masterminds behind the Galactic war between the Earth Federation and the Reptilian Draconian Empire. The Master has framed the Doctor and Jo as spies working for the Draconians. The Master is also working with the Doctor's greatest enemies, the Daleks, who are also behind the galactic war.
- The Doctor and Sarah return to London in the present day only to find the city strangely deserted, while nearby UNIT are dealing with a series of monster appearances.
- With the TARDIS trapped on a collision course with a strange, orbiting spaceship, locked in time as well as space, the Black Guardian recruits a deceitful and ill-natured British student to kill the Doctor.
- The Doctor and Sarah answer a distress call and find themselves on Zeta Minor, the last planet of the known universe, where a Morestran expedition has gone missing.
- While the Doctor carries out an investigation into ESP, Mike Yates asks Sarah to look into some strange goings on at a meditation centre he's attending.
- 1963–198945mTV-PG7.5 (563)TV EpisodeThe Doctor and Peri arrive on the planet Necros to attend the funeral of scientist Professor Athur Stengos, only to discover Davros, the creator of the Daleks, has become "The Great Healer" who runs Tranquil Repose, a facility where the terminally ill are kept in suspended animation until a cure is found. They learn Davros has been turning all those in suspended animation into Daleks that are loyal to him while making food from their dead bodies.
- The Doctor and Romana find an isolated planet. K9 scans the planet, finding it has a village. The Doctor and Romana find high technology readings with the TARDIS sensors even though the village appears to have an absence of technology. The TARDIS lands near the village. The Doctor and Romana set off, leaving K9 behind to guard the TARDIS. Adric, from the previous story, has stowed away on the TARDIS. K9 finds him, but Adric tells him that as he is a stowaway. The Doctor and Romana find two men arguing. The Doctor asks to speak to a scientist. One of the men mistakes them for lords. After the Doctor, Romana and one of the men leave, The other man, using a radio, calls to others and tells them of the two strangers who just arrived. Travelling through the forest, Romana and the Doctor are surrounded by men. They surrender and are taken to a hidden cave, where they meet the rebels. One man is trying to get a computer up and running. The Doctor helps him and Romana identifies the computer system as coming from Earth, Adric tries to steal some food in the village. Adric is caught and those who caught him take on pity him and offer him a place to sleep because of the evil things that happen at night. The Doctor and Romana appear to be attacked by a swarm of bats at the end.