Star Trek (1966–1969)
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Assignment: Earth 

While back in time observing Earth in 1968, the Enterprise crew encounters the mysterious Gary Seven who has his own agenda on the planet.



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Episode complete credited cast:
Roberta Lincoln (as Terri Garr)
Colonel Nesvig
Bruce Mars ...
First Policeman
Second Policeman
Paul Baxley ...
Security Chief


When the Enterprise is assigned to observe Earth's history in 1968, suddenly it intercepts a transporter beam which originates at least a thousand light-years from Earth, bringing aboard a humanoid alien 'agent Gary Seven' holding a black cat called Isis, who warns them to step back and let him go to accomplish his mission to save Earth; initially phaser-struck down, he manages to beam himself away, actually on a mission to prevent a nuclear rocket being launched at McKinley base because earth is socio-politically not ready for its technological progress. He assumes a classified identity to override a powerful computer, and mistakes the wrong girl, Miss Lincoln, for another agent; the computer reports both other agents he seeks are deceased in an accident. Meanwhile Kirk and Spock beam down to investigate if the alien isn't hostile, realizing the risk of changing their own past. When they get on his trail, the girl sees Spock's ears, calls the police and Seven gets away; they must ... Written by KGF Vissers

Plot Summary | Plot Synopsis


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Release Date:

29 March 1968 (USA)  »

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Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


No scenes for this episode were actually shot at Cape Kennedy itself. The illusion of being in Florida was achieved by using a combination of stock footage and Paramount studio locations. See more »


As the gantry elevator rises with Gary Seven, a shadow of the grating wall is cast on the floor of the elevator. But as the elevator car passes girders, their shadows should also be cast on the floor, but they are not. (This shows that the passing girders are simply backdrops being scrolled by.) See more »


[first lines]
Captain James T. Kirk: Captain's log. Using the light speed breakaway factor, the Enterprise has moved back through time to the 20th century. We are now in extended orbit around Earth, using our ship's deflector shields to remain unobserved. Our mission - historical research. We are monitoring Earth communications to find out how our planet survived desperate problems in the year... 1968.
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User Reviews

Borrowing From Another Series or Two
11 May 2009 | by (United States) – See all my reviews

Often, Star Trek like other series would borrow premises from other shows. In this case, the time traveling theme is borrowed from Irwin Allen and the Time Tunnel which was running during this period. This episode is definitely themed like Time Tunnel.

Robert Lansing whose fame on TV came from 12 O'Clock High is borrowed here to be Seven, a man transporting into 1960's earth. Luckily this does not go too far and have anyone wind up in the Arizona Desert near the tunnel. The theme of changing history of this show is pretty well done regardless.

Some say this was a pilot by Roddenberry for another series, but if that is the case, I wonder why he would borrow the premise from Irwin Allen? Everything here turns out like Time Tunnel as at the end of the show the Enterprise erases the history meddling in 1968 like that show did.

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