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Doctor Who Season 13 Episodes
Season 13 Episode Guide
26 Episodes 1975 - 1976
Episode 1
Terror of the Zygons: Part One
22 mins
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.
Episode 2
Terror of the Zygons: Part Two
25 mins
The Zygon traps the Doctor and Sarah in a decompression chamber while Harry is taken to the aliens' underwater ship.
Episode 3
Terror of the Zygons: Part Three
24 mins
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.
Episode 4
Terror of the Zygons: Part Four
25 mins
UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.
Episode 5
Planet of Evil: Part One
24 mins
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.
Episode 6
Planet of Evil: Part Two
22 mins
The Doctor realises that Zeta Minor lies on the boundary between the universes of matter and anti-matter and something on the planet won't let the Morestrans leave.
Episode 7
Planet of Evil: Part Three
24 mins
The Doctor makes a deal with the Anti-Matter Beast to return all the anti-matter to the planet but Sorenson is determined to continue his research.
Episode 8
Planet of Evil: Part Four
24 mins
The Doctor tries to convince Sorenson to sacrifice himself for the rest of the crew but Salamar's attempt to deal with the situation causes their problem to multiply.
Episode 9
Pyramids of Mars: Part One
25 mins
Returning to Earth after their latest adventure, the Doctor and Sarah Jane arrive at the site of UNIT headquarters, but in 1911 long before its existence. They find themselves in a room filled with Egyptian artifacts in a house owned by Egyptologist Marcus Scarman. They rescue Marcus' colleague, Dr. Warlock, who was shot by Marcus' servant Ibrahim Namin, a fanatical believer in the impending return of his god, Lord Sutekh. When Sutekh's essence arrives through a space-time portal, he takes control of Marcus Scarman.
Episode 10
Pyramids of Mars: Part Two
24 mins
Sutekh the Destroyer, last of the god-like Osirians, seeks escape from centuries of entombment beneath an Earth pyramid, using formidable psyonic energy to animate the corpse of an archaeologist to secure the area around a former priory, killing all humans within while robot mummies build an interplanetary rocket. The Doctor shows Sarah what will happen to Earth if they don't stop him.
Episode 11
Pyramids of Mars: Part Three
25 mins
The mummies have nearly completed the Osiran missile destined for Mars to destroy the force field keeping Sutekh imprisoned. The Doctor and Sarah Jane find a way to deactivate part of the force field allowing them acquire a supply of gelignite from the poacher's storage room. Laurence tries to awaken his brother Marcus but Sutekh is in complete control. Posing as one of the mummies, the Doctor tries to place the explosive at the missile site but its ineffectual again thanks to Sutekh's mental powers. The Doctor decides it's time to visit Sutekh himself to distract him. There is a price to pay however.
Episode 12
Pyramids of Mars: Part Four
25 mins
In thwarting Sutekh's bid for freedom, the Doctor gets too close and loses his own, becoming Sutekh's "plaything" for the next century. But Sutekh sees a way of using the Doctor to destroy the power generator on Mars that keeps him paralyzed and entombed on Earth. Then he can finally unleash himself upon the universe, destroying all life, everywhere.
Episode 13
The Android Invasion: Part One
24 mins
The Doctor and Sarah return to Earth in the present day to find a strangely deserted village and woods stalked by white-clad figures.
Episode 14
The Android Invasion: Part Two
24 mins
The Doctor suspects Crayford brought something to Earth in his rocket, as he and Sarah find themselves hunted by UNIT.
Episode 15
The Android Invasion: Part Three
25 mins
Everything is fake - an alien training ground staged by Styggron of the Kraals to train android duplicates to quietly invade Earth, substitute themselves, take over, then eradicate the human race without a shot fired. Now if only the Doctor, stranded without his TARDIS, can reach Earth first.
Episode 16
The Android Invasion: Part Four
23 mins
The Doctor and Sarah reach Earth and try to warn the research centre about the Kraal invasion before Styggron unleashes his virus.
Episode 17
The Brain of Morbius: Part One
25 mins
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.
Episode 18
The Brain of Morbius: Part Two
25 mins
The Sisterhood prepare to sacrifice the Doctor to the Sacred Flame and Sarah is injured while rescuing him.
Episode 19
The Brain of Morbius: Part Three
25 mins
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.
Episode 20
The Brain of Morbius: Part Four
24 mins
Morbius goes on the rampage, forcing the Doctor and Solon to team up to try and bring him back under control.
Episode 21
The Seeds of Doom: Part One
24 mins
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.
Episode 22
The Seeds of Doom: Part Two
24 mins
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.
Episode 23
The Seeds of Doom: Part Three
25 mins
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.
Episode 24
The Seeds of Doom: Part Four
24 mins
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.
Episode 25
The Seeds of Doom: Part Five
25 mins
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.
Episode 26
The Seeds of Doom: Part Six
22 mins
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.