A transporter accident places Capt. Kirk's landing party in an alternate universe, where the Federation is a barbarically brutal empire.



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Episode complete credited cast:
Marlena (as Barbara Luna)
Vic Perrin ...
John Winston ...
Pete Kellett ...
Kirk's Henchman


Beamed up during an ion storm, which causes a transporter malfunction, the landing party of Kirk, McCoy, Scotty and Uhura find themselves in a mirror universe aboard a parallel Enterprise run by ruthless barbarians. The ion storm also caused their malicious counterparts to beam to the real starship. Kirk and the others must find a way home before they are discovered and exposed by their parallel crew members, who use treachery, back-stabbing and seduction to get what they want. Written by fkelleghan@aol.com

Plot Summary | Plot Synopsis


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Release Date:

6 October 1967 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


This episode was a primary inspiration for Blakes 7 (1978). See more »


In beginning scene when Kirk and the others first beam back up to the Enterprise, Kirk signals the ship to engage, then puts his communicator away and puts his hands down by his side. As they first appear in the transporter pad aboard the ship, he has his communicator still in his hand, held up to his mouth. During the original series, movement during transport was not possible. See more »


Mirror Spock: I shall operate the transporter. You have two minutes and ten seconds.
Captain James T. Kirk: In that time, I have something to say. How long before the Halkan prediction of galactic revolt is realized?
Mirror Spock: Approximately two hundred and forty years.
Captain James T. Kirk: The inevitable outcome?
Mirror Spock: The Empire shall be overthrown, of course.
Captain James T. Kirk: The illogic of waste, Mr. Spock. A waste of lives, potential, resources, time. I submit to you that your Empire is illogical because it cannot endure. I submit that *you* are illogical to be a willing part of ...
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Referenced in Stargate: Atlantis: Doppelganger (2007) See more »

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User Reviews

A Couple of Kirks
28 April 2014 | by (United States) – See all my reviews

I recently watched an old episode of The Twilight Zone where an astronaut returns to Earth and to a family that isn't quite right. The concept of a parallel universe has been a part of scifi for a long time. In this episode, after negotiating with a planet to gain dilithium crystals, Kirk beams up. At that very time, something happens, sending him into another universe. it contains similar characters though they are beset with avarice and evil. Even Spock has accepted the fact that maintain discipline he must inflict pain on people, even kill them. Of course, if good Kirk is on this starship, his counterpart is on the Enterprise we know. Of course, here comes the fun. The good Kirk must figure out what happened and find some way to turn things back. The other Kirk sticks out like a sore thumb but has the power of his position. So things aren't so easy to remedy. This is a wonderful use of a unique situation and the writers don't waste it. What's neat is that the good Kirk tries to initiate change on the new ship, so he isn't just single minded in his efforts.

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