Doctor Who

Season 13

TV-PG

It was during this season that the Doctor cut ties to UNIT (after Terror of the Zygons, the Brigadier would not appear again until Mawdryn Undead in 1983, and The Seeds of Doom marked the last occasion to date that the Doctor was explicitly said to be working for UNIT - as opposed to working with them as occasions warranted). Several of the serials in this season, particularly Pyramids of Mars and The Brain of Morbius, are among the best-known of the 1970s-era storylines. Though it was aired as a part of Season 13, Terror of the Zygons was actually filmed as part of the previous season; this holdover allowed the series to switch back to an autumn season start.

Where to Watch Season 13

26 Episodes

Terror of the Zygons (1)
E1
Terror of the Zygons (1)Scotland, the near future. Something is smashing oil rigs off the Scottish coast, and UNIT have been called in to investigate. The Brigadier summons the Doctor to Earth to help in the investigation, but it soon becomes clear some kind of alien presence is at work...
Terror of the Zygons (2)
E2
Terror of the Zygons (2)The Zygon traps the Doctor and Sarah Jane in a decompression chamber while Harry is taken to the aliens' underwater ship.
Terror of the Zygons (3)
E3
Terror of the Zygons (3)The Doctor and the Brigadier begin to realise who the Zygon imposters among them are while Sarah Jane discovers a secret tunnel to the underwater ship.
Terror of the Zygons (4)
E4
Terror of the Zygons (4)UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.
Planet of Evil (1)
E5
Planet of Evil (1)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.
Planet of Evil (2)
E6
Planet of Evil (2)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.
Planet of Evil (3)
E7
Planet of Evil (3)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.
Planet of Evil (4)
E8
Planet of Evil (4)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 problems to multiply.
Pyramids of Mars (1)
E9
Pyramids of Mars (1)The Doctor and Sarah are drawn off course and, instead of UNIT HQ, they arrive on the same site in 1911.
Pyramids of Mars (2)
E10
Pyramids of Mars (2)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.
Pyramids of Mars (3)
E11
Pyramids of Mars (3)The Doctor and Sarah try to destroy Sutekh's rocket but the Osiran's mental powers prove too great for them.
Pyramids of Mars (4)
E12
Pyramids of Mars (4)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.
The Android Invasion (1)
E13
The Android Invasion (1)The Doctor and Sarah return to Earth in the present day to find a strangely deserted village and woods stalked by white-clad figures.
The Android Invasion (2)
E14
The Android Invasion (2)The Doctor suspects Crayford brought something to Earth in his rocket, as he and Sarah find themselves hunted by UNIT.
The Android Invasion (3)
E15
The Android Invasion (3)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.
The Android Invasion (4)
E16
The Android Invasion (4)The Doctor and Sarah reach Earth and try to warn the research centre about the Kraal invasion before Styggron unleashes his virus.
The Brain of Morbius (1)
E17
The Brain of Morbius (1)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.
The Brain of Morbius (2)
E18
The Brain of Morbius (2)The Doctor is captured by the Sisterhood, and Sarah Jane is blinded freeing him. The Doctor has no choice but to go back for a cure, unaware that he is leaving Sarah Jane in the hands of a treacherous Dr. Solon and the renegade Time Lord Morbius.
The Brain of Morbius (3)
E19
The Brain of Morbius (3)While the Doctor goes to confront the Sisterhood to seek a cure for Sarah Jane's blindness, Solon realizes that he must transfer Morbius' brain into a new body before it is too late.
The Brain of Morbius (4)
E20
The Brain of Morbius (4)Morbius lives once more, but as a rampaging beast. The Doctor is forced to ally with Dr. Solon to bring him to heel, but the two disagree about what should happen to Morbius.
The Seeds of Doom (1)
E21
The Seeds of Doom (1)The Antarctic, the near future. A strange seed-pod is unearthed from 20-thousand-year-old ice. The Doctor and Sarah go to investigate, but are too late to prevent the pod infecting a scientist and unleashing a threat to all animal life on Earth...
The Seeds of Doom (2)
E22
The Seeds of Doom (2)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.
The Seeds of Doom (3)
E23
The Seeds of Doom (3)The Doctor and Sarah Jane return to England after their Antarctic ordeal and Chase tries to eliminate them, but they escape and track him down at his estate, where he is preparing to open the Krynoid pod.
The Seeds of Doom (4)
E24
The Seeds of Doom (4)The Doctor is captured by Chase, who plans to breed the stolen Krynoid pod. He is placed in an automated compost hopper and only Sarah Jane can save him... but will she make it before the Krynoid grows to fruition ?
The Seeds of Doom (5)
E25
The Seeds of Doom (5)The Krynoid grows to a monstrous size and traps the Doctor and the others in a cottage. The creature demands they turn over the Doctor, while Chase seeks to make an alliance with the alien vegetation.
The Seeds of Doom (6)
E26
The Seeds of Doom (6)The Doctor, Sarah Jane, and Scorby are trapped in the manor as a possessed Chase stalks them from within, while the gigantic Krynoid prepares to crush them from without. Worse, the alien plant is ready to germinate, spreading its seeds across England.