Star Trek: Season 2, Episode 4

Mirror, Mirror (6 Oct. 1967)

TV Episode  |   |  Action, Adventure, Mystery
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Ratings: 9.2/10 from 1,473 users  
Reviews: 16 user | 6 critic

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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Title: Mirror, Mirror (06 Oct 1967)

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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

Plot Summary | Plot Synopsis


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Release Date:

6 October 1967 (USA)  »

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


First appearance of the emergency manual monitor set. See more »


When Dr. McCoy uses a hypo to gain entrance to Engineering for Scotty and himself: when the door first opens, the shoulder of the set crew can be seen briefly behind the actors. See more »


Uhura: [flirting with Mirror Sulu and stroking his face] You... were supposed... to come back. You... didn't... come back.
Mirror Sulu: [smiles and looks away from security panel]
Uhura: [smacks Mirror Sulu's face after security alarm clears] Oh... I seem to have changed my mind!
Mirror Sulu: You live dangerously, lady.
Uhura: So do you, mister, so do you.
See more »


Spoofed in Community: Introduction to Finality (2012) 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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