Doctor Who: Season 12, Episode 4

Robot: Part Four (18 Jan. 1975)

TV Episode  |  TV-PG  |   |  Adventure, Drama, Family
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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.



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Episode complete credited cast:
Patricia Maynard ...
Michael Kilgarriff ...
Edward Burnham ...
Alec Linstead ...


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.

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Release Date:

18 January 1975 (UK)  »

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Technical Specs

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Aspect Ratio:

1.33 : 1
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Did You Know?


This episode was watched by 9 million viewers on its original transmission. See more »


Doctor Who: You know, what you need is a change.
Sarah Jane Smith: Hmm.
Doctor Who: How about a little trip in the TARDIS? I'm just off.
Sarah Jane Smith: Wait, you can't just go!
Doctor Who: Why not? It's a free cosmos!
Sarah Jane Smith: The Brigadier!
Doctor Who: The Brigadier? Wants me to address the cabinet? Have lunch at Downing Street, dinner at the Palace, and write seventeen reports in triplicate! Well I won't do it. I won't, I won't, I...
Doctor Who: [pounds his fist on the table] won't!
Sarah Jane Smith: [startled] Ooh!
Doctor Who: Why should I?
See more »


Featured in Doctor Who Live: The Afterparty (2013) See more »

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User Reviews

Tom Baker arrives with a bang!
18 November 2014 | by (South Wales, UK) – See all my reviews

Review of all 4 episodes:

In the first episode of this story we see the regeneration from Jon Pertwee's third Doctor into Tom Baker's fourth Doctor. Baker arrives in full exuberant form with no effort to allow viewers time to adjust to the huge change in personality for their hero. There is a lot of humour and mad eccentricity on display and Baker is marvellous right from the start. Throughout the story he displays hilarious wit and energy but also a good dose of brilliant intelligence and grit.

The story itself is of secondary importance to the introduction of the new Doctor and the re-drawing of his relationships with Sarah Jane and the UNIT team. All the regulars are great as usual and new arrival Harry Sullivan is a very good addition.

The Doctor and UNIT have to deal with a powerful robot that is being used by scientists to give them the opportunity to gain control of the world's nuclear weapons so they can take control and run the world the way they believe it should be run. There are some strong guest characters, all very well acted and there is plenty of action and fun. The robot itself while not appearing that special to look at, is actually a very impressive creation as it moves and acts quite effectively. The robot is also given a lot of character as it struggles with its orders which contradict its prime directive not to harm humans.

There is a lot of good dialogue, both funny when required and serious the rest of the time. However, not all the characters actions are entirely consistent or logical and that one problem alone starts to reduce the overall quality of the story a little as it goes along. From the excellent first episode and the really strong second and third episodes, by the fourth episode the story becomes a little less impressive with the slightly silly and pointless idea of the robot increasing to giant size. Still good and exciting but not as great as it could have been.

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