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?


This takes place in 2268. See more »


When the landing party reaches The Controller's room, Kara inflicts pain with the belts that had been placed on them earlier. McCoy drops the device that controls Spock's body, and Kirk painfully reaches for it. When the camera angle changes, Spock's body is not wearing a pain belt. When the angle changes again, Spock is once again wearing a belt. See more »


[last lines]
[McCoy has restored Spock's brain]
Captain James T. Kirk: How do you feel, Spock?
Mr. Spock: On the whole, Captain, I believe I am quite fit. It's fascinating. A remarkable example of a retrograde civilization. At the peak, advanced beyond any of our capabilities, and now operating at this primitive level which you saw. And it all began thousands of years ago, when a glacial age reoccurred. You see, this underground complex was developed for the women. The men remained above, and a male-female schism took place. A ...
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User Reviews

Brain and Brain! What is Brain?
1 January 2007 | by (United States) – See all my reviews

Here I am, at the start of a new year, watching "Spock's Brain" again. There goes one resolution down the drain. It's unfortunate that this episode may have been the introduction for many viewers to the Trek series (it was the 1st broadcast of the 3rd season). What a difference a new season makes! Like "The Trouble With Tribbles," this is one of the most famous episodes, but for different reasons, having to do with the epitome of lousiness. Knowledge of Trek's cheese factor may have spread from this point. There's really nothing wrong with the plot, on paper - an early version of "Star Trek III:The Search For Spock" of '84; in this case, it's 'The Search For Spock's Brain.' Here, Kirk and crew are moving along in their starship, minding their own business, when a small ion-propelled ship approaches; a space babe materializes on the bridge of the Enterprise and knocks out everyone with the touch of a button on her spiffy bracelet (and I mean, EVERYone, on the entire ship! - similar to "By Any Other Name"). When the crew awaken, they find something missing - you guessed it! - Spock's brain! Yes, this is Spock's final episode - just kidding. Here's a minor discrepancy already: the female invader is able to conk out everyone immediately; yet later, on the planet they find her on, she and her cohorts take the trouble to affix funky belts on Kirk and his boys to send painful knockout signals. I won't even elaborate on the slow pace of this episode, with the camera, for example, settling on an immobile Spock standing there, as if something is about to happen, yet nothing does.

Someone, meaning the producers, the director and the actors, took a wrong turn or at least a sideways view of this story. As an example, when McCoy slowly informs Kirk of Spock's, eh, problem, it was probably meant to be a suspenseful, grim scene. It isn't. 'His brain is gone..!' McCoy says, looking a bit shell-shocked. Kirk mouths the same phrase, also shocked or stunned. You expect Scotty to repeat it yet again, then Nurse Chapel. I think you get the tone of most of the episode - you're chuckling by this point. By the time we get to the underground civilization on that planet, things have escalated to a laugh-riot, with 'Morgs' and 'Eymorgs' and 'you are not Morg' ringing in our ears as Kirk tries to make sense of a wacko culture divided between female rulers and male brutes. Spock's body is turned into a walking puppet, guided by McCoy's gizmo like a toy robot. Kirk's key meeting with the ruling females, all of whom speak like spoiled teenagers, becomes an exercise in ultimate Trek cheese; Kirk even gets on his knees to grovel at one point, before the female ruler sends him spasming into painful oblivion. It's rather ghastly yet you can't turn away, spellbound in disbelief by the hysterics on screen. All the concepts are sabotaged by the execution, even the climactic brain re-attachment surgery, which begins fine; McCoy gets his brain boosted and proceeds with new skills. Then he starts to forget and Spock talks him through the rest, the audience understanding full well that neither has the knowledge of these unknown techniques. Some entertainment value is there, no doubt, but beware; this all could be a... dare I say it - a drain on the brain.

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