The crew of the Enterprise pursues a mysterious woman who has abducted Spock's brain.



(created by), (as Lee Cronin)

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Episode complete credited cast:
James Daris ...
Sheila Leighton ...


The Enterpise is approached by an ion-propelled craft (much to Eng. Scott's liking); from it enters a female who renders everyone unconscious. When the crew wakes up, McCoy finds Spock alive in sick bay but with his brain surgically removed. McCoy urges its quick restoration if he's to survive at all. Desperately Kirk follows an ion-trail to a system where he gambles on an icy planet populated by a simple-minded all-male race of large cavemen who attack them. The landing party captures one, who says Kirk and crew are small like 'The Others' - bringers of pain and delight - whom they fear. McCoy brings down Spock's body, mobilized with a mechanical brain-substitute installed. They enter the acclimatized, underground dwelling of 'The Others' - a similarly simple-minded all-female race of enslavers - and overpower female Luma by surprise. Kirk makes communicator contact with Spock, who knows not where he is but is aware of autonomic functions. As they finally find Kara, the female ... Written by KGF Vissers

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Release Date:

20 September 1968 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


Gene Roddenberry was fascinated by the idea of a matriarchal society, and revisited the idea in Genesis II (1973) and Star Trek: The Next Generation: Angel One (1988). See more »


When the Morg first approach the landing party, they have a fur sleeve on their right arms. When they meet the landing party, the film is reversed and the fur sleeves are now on their left arms. See more »


Captain James T. Kirk: A dead and buried city... on a planet in a glacial age.
Chekov: And the male humanoid who doesn't know the meaning of the word "female".
See more »


Featured in Taps (1981) See more »

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User Reviews

Forget the smug derision this episode gets. It's Trek at it's goofy best.
6 April 2016 | by (United Kingdom) – See all my reviews

Trek at it's best is sublime, at it's worst embarrassing to watch, but why is this episode so panned? It is great fun. Admittedly one is left feeling one has watched some sort of pantomime special, or a Trek equivalent of Police Squad. However, there are far worse episodes in series three - The Way to Eden is at the bottom of the barrel in my opinion - and I'm personally grateful that the studio pulled the plug as the scriptwriters were rapidly running out of new ideas.

The plot is simple. A matriarchal underground society steals Spock's brain because their old one - which controls all their underground machinery - has broke. See? Perfectly understandable. Kirk, Scotty and McCoy beam down to rescue him/it, in the process discovering there's a bit more to this act of theft than first appears.

Would it be a spoiler to reveal that Spock is reunited with his brain ready for the next episode? DeForest Kelley is a delight to watch as the stressed brain surgeon, and his banter with Nemoy immediately after is equally entertaining.

Forget the smug derision this episode gets. It's Trek at it's goofy best, up there with The Trouble with Tribbles and various other "don't worry too much about the plot" episodes.

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