Star Trek (1966–1969)
26 user 6 critic

Mirror, Mirror 

A transporter accident places Captain Kirk's landing party in an alternate universe, where the Enterprise is in the service of a barbarically brutal empire.


Marc Daniels


Gene Roddenberry (created by), Jerome Bixby

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Episode complete credited cast:
William Shatner ... Capt. Kirk
Leonard Nimoy ... Mr. Spock
DeForest Kelley ... Dr. McCoy
BarBara Luna ... Marlena (as Barbara Luna)
James Doohan ... Scott
George Takei ... Sulu
Nichelle Nichols ... Uhura
Vic Perrin Vic Perrin ... Tharn
Walter Koenig ... Chekov
John Winston John Winston ... Lt. Kyle
Garth Pillsbury ... Wilson
Pete Kellett 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


TV-PG | See all certifications »


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Release Date:

6 October 1967 (USA) See more »

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Did You Know?


In the mirror universe, the male computer explains that James Kirk became Captain by murdering his predecessor Christopher Pike, a character played in previous installments by Jeffrey Hunter and Sean Kenney. This is possibly the only time in TOS where Pike is mentioned but does not appear. See more »


Poorly-placed camera angles reveal the fight sequence choreography between Kirk and the "mirror" Spock. On more than one occasion, very noticeable gaps are visible as they fight. See more »


Captain James T. Kirk: [impersonating the parallel Kirk] You're the captain's woman, until he says you're not.
See more »

Alternate Versions

Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more »


Referenced in Star Trek: Enterprise: In a Mirror, Darkly, Part II (2005) See more »

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User Reviews

Opposite End of the Spectrum
27 April 2016 | by hellraiser7See all my reviews

It's always something we think about everyday, what would of happened or what would life of been like had we made this or that choice. Or what if a certain something occurred or the tide changed, what kind of society would we have, would it be better or worse? This is my second favorite episode of the entire show in fact one of my favorite episodes in general. Yeah it's true throughout the years the whole Parallel/Alternate universe concept has been played out from TV shows like "Fringe", "Sliders", "Once Upon a Time", etc. But this episode was the first or at least one of and still the best.

It was both slightly disturbing but at the same time fascinating and a bit funny as we see the alternate world where the federation is a proto fascist state that rules with an iron fist.

We see that most of the characters we know are the reverse of their good natured selves. I really like the performances of the actors it really feels believable that this is what the characters would turn out had they gone to the dark side of the force.

From Sulu whom is slimy and kinda a corporate weasel as he is finding an opportunity to shortcut his way to the top. We even see in one scene the evil version of Kirk whom is practically a power mongering blow hole, it was kinda funny seeing how he is just exercising over the top aggression and some of the things he says.

However the highlight for me is seeing the evil version of Spock whom is surprisingly pretty much the same just on the other team, let alone that goatee. It makes sense since logic is neutral, it can work for either side as look as the system it works for functions. Spock we see him cold and calculating which makes him slightly menacing, however I don't feel he is fully evil but more of someone operating on a Gray level as he probably deep inside doesn't fully agree with most of the principles of the empire he serves but he serves it all the same because it functions because it provides order which deems it a necessary evil.

I really like the reactions of Kirk, McCoy, Scotty, and Aurra in this alternate world, their sympathetic because we're in the same boat as them as we're trying to make sense of the world their in. And their as disturbed as we are as they see how corrupt the world is along with the corrupt side of their counterparts, in their point of view it's as if they might have walked into Hell. It's also a really dangerous world as we see the way to get promoted is by assassination, in a way you can say it's an extreme version from what goes on in the corporate world and some of the underhanded tricks some dishonorable and dishonest employees utilize to get promoted or up in the corporate ladder. So, yeah you might want to think twice about having a career in this version of Starfleet because it can be a short one.

The fight against the evil Spock was solid, he's a tough honcho to physically beat as we see him throwing Ahura, Scotty, McCoy, and Kirk around. It's sort of a fan dream come true as you might wonder what would happen if any of these characters got into a fight with him.

And I really like some of the final minutes as Kirk gives food for thought for the evil Spock on his perception of the world they visited and on the possibility of making it better. From seeing how despite the little time the evil Spock along with the girl whom helped spent with Kirk it really affected them both and helped them see that another way is possible and can exist.

In a way this episode really has a good message that one to few people really can make a difference but also that things can be better as long as possibility exists.

As an old saying goes, life is full of possibilities.

Rating: 4 stars

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