As of July 2026, Doctor Who Season 12 aired in 1974 with 20 episodes — streaming now on BritBox. Full episode guide and where to watch below.
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Doctor Who Season 12

1974 20 Episodes Drama · Action & Adventure ⭐ 8/10

If you want science fiction that respects its own premise, Doctor Who Season 12 is available on and right now. The 1-season run is exactly the right length for what it is doing. An 8/10 rating says what the writing already makes obvious: this one works. Tom Baker leads a cast that never lets the concept overwhelm the characters. Start it whenever you need something guaranteed to land.

Doctor Who Season 12 is not trying to be everything to everyone, and that focus is exactly what makes it work. What makes Doctor Who Season 12 work is that the ideas never crowd out the people having them. All the stories in this season were interconnected, several forming a loose story arc relating to Space Station Nerva. The Cybermen returned to the series for the first time since The Invasion. Genesis of the Daleks, a story which introduced Davros and showed the creation of the Daleks, is one of the most famous of all Doctor Who serials. Tom Baker and Elisabeth Sladen lead a cast that brings real weight to the material. It was aired in 1974. The world-building is meticulous enough to sustain multiple rewatches, with details early on that only make sense later. It rarely drops the ball, and when it does, it recovers fast.

Sci-fi fans who want ideas alongside the spectacle will find Doctor Who Season 12 genuinely rewarding. If you have run out of similar titles to watch, this is a strong next pick. The complete run is available and best experienced without too much prior knowledge of where it goes. Tom Baker grounds the bigger ideas in something human. Once you are in, you will want to talk about it.

📡 Where to Watch Doctor Who Season 12

🇦🇺 Australia
🇺🇸 United States
🇬🇧 United Kingdom
🇨🇦 Canada
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🎬 Doctor Who Season 12 — Episode Guide

E1
Robot (1)
1974-12-28
The Doctor changes form again. Before he has fully re-covered, something of colossal strength steals a secret weapon, and the convalescent Doctor starts to investigate.
E2
Robot (2)
1975-01-04
The Doctor and Sarah Jane become convinced Think Tank are behind the electronic component thefts but are unable to stop them carrying out another raid.
E3
Robot (3)
1975-01-11
Sarah Jane and Kettlewell infiltrate an SRS meeting to try and find out what Miss Winters is up to but there is a surprise in store.
E4
Robot (4)
1975-01-18
UNIT attempt to get into the bunker to stop Miss Winters setting off the world's nuclear missiles but first they have to get past the K1.
E5
The Ark in Space (1)
1975-01-25
The Doctor's attempt to give Harry a trip in the TARDIS sees the two of them and Sarah Jane arriving onboard a space station in the far future, with some rather deadly security mechanisms.
E6
The Ark in Space (2)
1975-02-01
The Doctor and Harry revive the Ark's medtech, Vira, to help Sarah Jane. But when station commander Noah is revived, he becomes suspicious of the newcomers.
E7
The Ark in Space (3)
1975-02-08
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.
E8
The Ark in Space (4)
1975-02-15
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.
E9
The Sontaran Experiment (1)
1975-02-22
The Doctor, Sarah Jane and Harry teleport to Earth to ensure the planet is safe for the survivors on board Nerva Beacon to return and reinhabit their world. A Sontaran named Styre has captured a group of humans and is conducting experiments on them to discover the human body's weaknesses, as part of...
E10
The Sontaran Experiment (2)
1975-03-01
The Doctor learns that Styre has been experimenting on the Galsec crewmembers to pave the way for a Sontaran invasion of Earth and decides the only way to halt his plans is to challenge him to a duel.
E11
Genesis of the Daleks (1)
1975-03-08
The planet Skaro, the distant past. The Time Lords divert the Doctor, Sarah Jane and Harry to this war-torn world, and give the Doctor a mission: the evil of the Daleks is about to be born here, and the Doctor is to try to ensure they evolve into less lethally aggressive beings - or, failing that, t...
E12
Genesis of the Daleks (2)
1975-03-15
The Doctor and Harry are taken to the Kaled bunker where Davros is preparing to demonstrate the Daleks, while Sarah Jane is captured by the Thals and taken to their city as a slave worker.
E13
Genesis of the Daleks (3)
1975-03-22
The Doctor and Harry head to the Kaled city to alert the authorities to Davros' plans while Sarah Jane and Sevrin are forced to work on the completion of the Thals' rocket.
E14
Genesis of the Daleks (4)
1975-03-29
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.
E15
Genesis of the Daleks (5)
1975-04-05
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.
E16
Genesis of the Daleks (6)
1975-04-12
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.
E17
Revenge of the Cybermen (1)
1975-04-19
The orbit of Jupiter, the 25th century. Arriving back on the Nerva Beacon much earlier in history, the Doctor and his friends discover the satellite beset by space plague while its crew struggles to keep space traffic away from Voga, the newest moon of Jupiter. But what is the connection between Vog...
E18
Revenge of the Cybermen (2)
1975-04-26
The Doctor transmits Sarah Jane and Harry down to Voga to cure Sarah Jane of the Cybermat's poison but Kellman's sabotage means he is unable to bring them back.
E19
Revenge of the Cybermen (3)
1975-05-03
The Cybermen force the Doctor, Stevenson and Lester to carry bombs to the centre of Voga while Sarah Jane, Harry and Tyrum decide to contact Vorus.
E20
Revenge of the Cybermen (4)
1975-05-10
The Doctor, Harry and Lester try to destroy the Cybermen's relay device, while the Vogans prepare to destroy Nerva even though Sarah Jane is still on board.

🎭 Cast of Doctor Who Season 12

Tom Baker
Tom Baker
The Doctor
Elisabeth Sladen
Elisabeth Sladen
Sarah Jane Smith
Ian Marter
Ian Marter
Harry Sullivan

📋 All Seasons of Doctor Who

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