Season 13
(1975)
Overview
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…
Cast
as The Doctor
as Sarah Jane Smith
Episodes
Terror of the Zygons (1) 7.1
August 30, 1975
Scotland, the near future. Something is smashing oil rigs off the Scottish coast, and UNIT have been called in to inves…
Terror of the Zygons (2) 7.5
September 6, 1975
The Zygon traps the Doctor and Sarah Jane in a decompression chamber while Harry is taken to the aliens' underwater shi…
Terror of the Zygons (3) 7.5
September 13, 1975
The Doctor and the Brigadier begin to realise who the Zygon imposters among them are while Sarah Jane discovers a secre…
Terror of the Zygons (4) 7.0
September 20, 1975
UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.
Planet of Evil (1) 7.4
September 27, 1975
The Doctor and Sarah answer a distress call and find themselves on Zeta Minor, the last planet of the known universe, w…
Planet of Evil (2) 7.5
October 4, 1975
The Doctor realises that Zeta Minor lies on the boundary between the universes of matter and anti-matter and something …
Planet of Evil (3) 7.5
October 11, 1975
The Doctor makes a deal with the Anti-Matter Beast to return all the anti-matter to the planet but Sorenson is determin…
Planet of Evil (4) 7.2
October 18, 1975
The Doctor tries to convince Sorenson to sacrifice himself for the rest of the crew but Salamar's attempt to deal with …
Pyramids of Mars (1) 8.4
October 25, 1975
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) 8.2
November 1, 1975
The Doctor, Sarah and Laurence try to find a way to sever Sutekh's link to the mummies while poacher Ernie Clements fin…
Pyramids of Mars (3) 8.2
November 8, 1975
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) 8.2
November 15, 1975
Sutekh forces the Doctor to transport Scarman and a mummy to Mars, where the Doctor and Sarah try to stop them destroyi…
The Android Invasion (1) 6.0
November 22, 1975
The Doctor and Sarah return to Earth in the present day to find a strangely deserted village and woods stalked by white…
The Android Invasion (2) 6.3
November 29, 1975
The Doctor suspects Crayford brought something to Earth in his rocket, as he and Sarah find themselves hunted by UNIT.
The Android Invasion (3) 6.5
December 6, 1975
The Doctor is captured by Styggron and left to die in the destruction of the fake village but Sarah escapes from the di…
The Android Invasion (4) 6.7
December 13, 1975
The Doctor and Sarah reach Earth and try to warn the research centre about the Kraal invasion before Styggron unleashes…
The Brain of Morbius (1) 8.3
January 3, 1976
The storm-lashed planet Karn. Near a graveyard of crashed starships, the demented surgeon Solon hides in his castle, th…
The Brain of Morbius (2) 8.4
January 10, 1976
The Doctor is captured by the Sisterhood, and Sarah Jane is blinded freeing him. The Doctor has no choice but to go bac…
The Brain of Morbius (3) 8.2
January 17, 1976
While the Doctor goes to confront the Sisterhood to seek a cure for Sarah Jane's blindness, Solon realizes that he must…
The Brain of Morbius (4) 8.4
January 24, 1976
Morbius lives once more, but as a rampaging beast. The Doctor is forced to ally with Dr. Solon to bring him to heel, bu…
The Seeds of Doom (1) 8.1
January 31, 1976
The Antarctic, the near future. A strange seed-pod is unearthed from 20-thousand-year-old ice. The Doctor and Sarah go …
The Seeds of Doom (2) 8.4
February 7, 1976
Two employees of the millionaire Harrison Chase arrive at the Antarctic base, and they will stop at nothing to get hold…
The Seeds of Doom (3) 8.0
February 14, 1976
The Doctor and Sarah Jane return to England after their Antarctic ordeal and Chase tries to eliminate them, but they es…
The Seeds of Doom (4) 8.0
February 21, 1976
The Doctor is captured by Chase, who plans to breed the stolen Krynoid pod. He is placed in an automated compost hopper…
The Seeds of Doom (5) 7.8
February 28, 1976
The Krynoid grows to a monstrous size and traps the Doctor and the others in a cottage. The creature demands they turn …
The Seeds of Doom (6) 8.0
March 6, 1976
The Doctor, Sarah Jane, and Scorby are trapped in the manor as a possessed Chase stalks them from within, while the gig…