6 user 7 critic
After finding himself erased from recent history, Spock must travel back in time to save himself as a youth.


Hal Sutherland


Gene Roddenberry (created by), D.C. Fontana




Episode cast overview:
William Shatner ... Capt. Kirk (voice)
Leonard Nimoy ... Mr. Spock (voice)
DeForest Kelley ... Dr. McCoy (voice)
George Takei ... Sulu (voice) (credit only)
Nichelle Nichols ... Uhura (voice) (credit only)
Majel Barrett ... Amanda Grayson / Grey (voice)
James Doohan ... Scott / Guardian of Forever / Aleek-Om / Bates / Lt. Erikson / Commander Thelin / Vulcan Healer (voice)


Upon his return from a journey through the Guardian of Forever Kirk realizes that history has been altered and no one remembers Spock. An Andorian is now his First Officer and it appears that Spock met an untimely death during a childhood ritual on Vulcan. Spock must use the Guardian again and return to the Vulcan of his youth and restore his time line. Written by tomtrekp

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Official Sites:

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Release Date:

15 September 1973 (USA) See more »

Company Credits

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Technical Specs


Color | Color (technicolor)
See full technical specs »

Did You Know?


This cartoon's view of Spock's hometown Shi'Kar has been added to the background in the remastered version of Star Trek: The Original Series: Amok Time (1967). See more »


When Spock's clothing bag is beamed down, the wrong sound effect is used. it is the Guardian's sound when Kirk and the archaeologists returned at the beginning of the story. See more »


Young Spock: If you will excuse me now, I have some business to conduct with schoolmates.
Sarek: Business?
Young Spock: A demonstration of the Vulcan neck pinch. Our cousin taught me.
See more »


Featured in Drawn to the Final Frontier (2006) See more »

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User Reviews

Spock Finds His Past
17 March 2017 | by HitchcocSee all my reviews

When Spock and Kirk return through a time portal like the one in "The City on the Edge of Tomorrow," that many consider the best episode of the original series. When they appear, the only one who knows Spock is Kirk. When he gets to the ship, an Andorean has his job. Spock must go back in time and meet himself as a child. Something must have happened when he was a boy with a Vulcan father (Sarek) and a human mother. He must find out what the variable is and change it before he returns. This is a really good episode. I'm not nearly as caught up in the animations shortcomings because the story is engaging.

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