Star Trek: Season 3, Episode 1

Spock's Brain (20 Sep. 1968)

TV Episode  -   -  Action | Adventure | Sci-Fi
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Ratings: 5.6/10 from 831 users  
Reviews: 18 user | 3 critic

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



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Title: Spock's Brain (20 Sep 1968)

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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

Plot Summary | Add Synopsis

Plot Keywords:

brain | pain | humanoid | attack | 23rd century | See more »


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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 is the only Star Trek TOS episode to use a series regular character's name in the title. 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 »


Captain James T. Kirk: We came to put you back. Where are you?
Mr. Spock: [voice] Back where?
Captain James T. Kirk: Back into your body. We brought it along with us.
Mr. Spock: [voice] Thoughtful, Captain, but probably impractical. While I might trust the Doctor to remove a splinter, or lance a boil, I do not believe he has the knowledge to restore a brain.
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Featured in Bring Back... Star Trek (2009) See more »

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User Reviews

Idiotic Example of the Series' Worst Excesses
7 July 2006 | by (Washington, DC) – See all my reviews

One of the worst episodes of the series, with poor dialogue and acting, and a remarkably stupid premise.

A mysterious visitor appears on the bridge of the Enterprise, renders the crew unconscious, and removes Spock's brain to run their civilization. Naturally, Kirk, Scott, McCoy, and (an automaton-like) Spock go below the planet surface to retrieve the brain. Unfortunately, the dialogue consists of such memorable lines as "Brain and brain, what is brain" and Shatner's hammy tendencies make themselves readily apparent as they would throughout most of the third season).

Skip it.

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