Star Trek (1966–1969)
41 user 9 critic

The City on the Edge of Forever 

When a temporarily insane Dr. McCoy accidentally changes history and destroys his time, Kirk and Spock follow him to prevent the disaster, but the price to do so is high.



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Episode complete credited cast:
John Winston ...
Transporter Chief
Bart La Rue ...
Guardian (voice) (as Bartell La Rue)


When an accident causes Dr. McCoy to go temporarily insane, he escapes to a strange planet. There, the search party discovers a device left by a superior, vanished civilization, a time portal that plays the history of Earth for them - but then Bones jumps through it into the past, causing a change in history important enough to make the Enterprise vanish. Kirk and Spock, who fortunately made a tricorder recording, must attempt to go through to just before McCoy's arrival and stop him from changing history in the United States during the Great Depression, where they have no advanced technology available. Written by KGF Vissers

Plot Summary | Plot Synopsis


TV-PG | See all certifications »


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Release Date:

6 April 1967 (USA)  »

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Sound Mix:


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Aspect Ratio:

1.33 : 1
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Did You Know?


One of William Shatner's favorite episodes. See more »


Spock picks a combination lock to obtain tools. This type of single-dial combination padlock was first marketed by Master Lock in 1935, five years after the events of the episode, and the early models had a metal dial, with the plastic dial depicted on the show coming at least two decades later. The particular lock Spock picks appears to be a much later copy of the Master design, possibly from the late 1950s, but much more likely to be from the early to mid 1960s, which was when the show was filmed. See more »


Dr. McCoy: You deliberately stopped me, Jim. I could have saved her. Do you know what you just did?
Spock: He knows, Doctor. He knows.
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Crazy Credits

The closing credits are set against a combination background of stills from that episode and previous episodes. See more »


Referenced in Star Trek: Yesteryear (1973) See more »


Theme From Star Trek
Written by Alexander Courage
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User Reviews

One of the best, except for, maybe...
28 April 2007 | by See all my reviews

I agree totally with the other posts. In my opinion, it is in the top three, along with 'An Errand of Mercy', and, of course, 'The Trouble with Tribbles,' which took the #1 spot in an audience choice-pick on (I think) the Sci-Fi Channel. In any event, I can't add anything to the excellent accolades already posted on 'City..', but I can't say I'm surprised, because, after all, despite its extensive re-writes (which I knew nothing about until now), it's still a Harlan Ellison piece, which is to say -- superb. I particularly agree with the person who gave kudos to Joan Collins. I'm not that familiar with her work -- she seems to be cast mostly in fluff roles, meant to extol her beauty -- but this was a terrific performance. Another post alluded to Shatner's acting ability, with which I also agree -- check out 'The Brothers Karamazov', and you'll see what I mean. And Spock, of course, was Spock, except, once again, recognized the depth of human emotion despite his mythic Vulcan stoicism. 'City...', in short, is extraordinary, both as sci-fi AND drama.

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