Star Trek (1966–1969)
21 user 6 critic

That Which Survives 

After the Enterprise landing party beams down to investigate a geologically interesting planet, their ship is hurled across the galaxy. Kirk and company find a deserted outpost guarded by the deadly image of a beautiful woman.


Herb Wallerstein


Gene Roddenberry (created by), John Meredyth Lucas (teleplay by) | 1 more credit »

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Episode complete credited cast:
William Shatner ... Capt. Kirk
Leonard Nimoy ... Mr. Spock
DeForest Kelley ... Dr. McCoy
Lee Meriwether ... Losira
James Doohan ... Scott
Arthur Batanides Arthur Batanides ... Lt. D'Amato, Geologist
George Takei ... Sulu
Nichelle Nichols ... Uhura
Naomi Pollack Naomi Pollack ... Lt. Rahda
Booker Bradshaw ... Dr. M'Benga
Brad Forrest Brad Forrest ... Ensign Wyatt
Kenneth Washington ... Watkins


As Kirk, McCoy, Sulu and geologist D'Amato beam over to a geologically unique planet, an attractive woman suddenly appears in the transporter room and, with but a touch, kills Transporter Chief Wyatt. They're not quite sure who or what she is. They also find themselves unable to contact the Enterprise, which has been flung nearly a thousand light years across the galaxy. The woman soon re-appears, both on the Enterprise and on the planet, touching/killing D'Amato and Engineer Watson. While the landing party faces extermination from this mysterious woman, the Enterprise, endeavoring to return, faces possible destruction from a subtle malfunction administered to their warp engines. Written by garykmcd

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TV-PG | See all certifications »


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Release Date:

24 January 1969 (USA) See more »

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Technical Specs


Sound Mix:




Aspect Ratio:

1.33 : 1
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Did You Know?


This is the last episode of TOS to have an unknown stardate. See more »


As Kirk orders the landing party to split up to find water, there is a close-up of Dr. McCoy with a strap over his left shoulder, but when the view switches to Kirk and McCoy the strap is missing. See more »


Captain James T. Kirk: [about Losira] She must have been... a remarkable woman.
Dr. McCoy: And beautiful.
Mr. Spock: Beauty is transitory, Doctor; however, she was evidently highly intelligent.
Captain James T. Kirk: Kirk to Enterprise, five to beam up. I don't agree with you, Mr. Spock.
Mr. Spock: Indeed, Captain.
Captain James T. Kirk: Beauty... survives.
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Featured in Top 10 Star Trek Technobabbles (2008) See more »

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User Reviews

Why Spock Is Not Himself?
11 February 2018 | by nickknightforeverSee all my reviews

Hi, My Theory to why Spock isn't himself is because both of his closest shipmates Captain Kirk & Doctor McCoy are stranded on an unknown planet light years away, another factor might be when the Enterprise recovered from being thrown away from the planet Uhura asks Spock what happened his response simply was he hit his head on the arm of the captain's chair, no permament damage. I did notice similarities to Wrath Of Khan & Search For Spock, first a conversation between Spock and Scotty about saving the ship, the second concerns Losira's planet. Live Long And Prosper.

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