Seasons & episodes
S13 · E1Terror of the Zygons (1) 1975-08-30 · 25 min
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...
S13 · E2Terror of the Zygons (2) 1975-09-06 · 25 min
The Zygon traps the Doctor and Sarah Jane in a decompression chamber while Harry is taken to the aliens' underwater ship.
S13 · E3Terror of the Zygons (3) 1975-09-13 · 25 min
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.
S13 · E4Terror of the Zygons (4) 1975-09-20 · 25 min
UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.
S13 · E5Planet of Evil (1) 1975-09-27 · 25 min
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.
S13 · E6Planet of Evil (2) 1975-10-04 · 25 min
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.
S13 · E7Planet of Evil (3) 1975-10-11 · 25 min
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.
S13 · E8Planet of Evil (4) 1975-10-18 · 25 min
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.
S13 · E9Pyramids of Mars (1) 1975-10-25 · 25 min
The Doctor and Sarah are drawn off course and, instead of UNIT HQ, they arrive on the same site in 1911.
S13 · E10Pyramids of Mars (2) 1975-11-01 · 25 min
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.
S13 · E11Pyramids of Mars (3) 1975-11-08 · 25 min
The Doctor and Sarah try to destroy Sutekh's rocket but the Osiran's mental powers prove too great for them.
S13 · E12Pyramids of Mars (4) 1975-11-15 · 25 min
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.
S13 · E13The Android Invasion (1) 1975-11-22 · 25 min
The Doctor and Sarah return to Earth in the present day to find a strangely deserted village and woods stalked by white-clad figures.
S13 · E14The Android Invasion (2) 1975-11-29 · 25 min
The Doctor suspects Crayford brought something to Earth in his rocket, as he and Sarah find themselves hunted by UNIT.
S13 · E15The Android Invasion (3) 1975-12-06 · 25 min
The Doctor is captured by Styggron and left to die in the destruction of the fake village but Sarah escapes from the disorientation chamber to try and rescue him.
S13 · E16The Android Invasion (4) 1975-12-13 · 25 min
The Doctor and Sarah reach Earth and try to warn the research centre about the Kraal invasion before Styggron unleashes his virus.
S13 · E17The Brain of Morbius (1) 1976-01-03 · 25 min
The storm-lashed planet Karn. Near a graveyard of crashed starships, the demented surgeon Solon hides in his castle, the last acolyte of the Time Lord despot Morbius. He only needs one final item to make his master live again... and then the Doctor and Sarah arrive...
S13 · E18The Brain of Morbius (2) 1976-01-10 · 25 min
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.
S13 · E19The Brain of Morbius (3) 1976-01-17 · 25 min
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.
S13 · E20The Brain of Morbius (4) 1976-01-24 · 25 min
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.
S13 · E21The Seeds of Doom (1) 1976-01-31 · 25 min
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...
S13 · E22The Seeds of Doom (2) 1976-02-07 · 25 min
Two employees of the millionaire Harrison Chase arrive at the Antarctic base, and they will stop at nothing to get hold of the second seed-pod.
S13 · E23The Seeds of Doom (3) 1976-02-14 · 25 min
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.
S13 · E24The Seeds of Doom (4) 1976-02-21 · 25 min
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 ?