Login or register
<-- Previous EpisodeNext Episode -->

Star Trek: Mirror, Mirror

The Enterprise is on a mission to convince the Halkan Council to allow the Federation to mine dilithium crystals on their planet. Kirk, Scotty, McCoy, and Uhura beam back up to the planet, but while doing so, an ion storm causes them to rematerialize in a parallel universe. There officers advance through assassination and the Empire plunders and pillages every planet they can find and destroys anyone that gets in its way.

Episode Info
Episode number: 2x4
Production Number: 60339
Airdate: Friday October 06th, 1967

Director: Marc Daniels
Writer: Jerome Bixby

Starring Roles
James DoohanJames Doohan
As Lt. Cmdr. Montgomery "Scotty" Scott
George TakeiGeorge Takei
As Lt. Hikaru Sulu
Nichelle NicholsNichelle Nichols
As Lt. Nyota Uhura
Walter KoenigWalter Koenig
As Ensign Pavel Chekov

Guest Stars
Garth PillsburyGarth Pillsbury
As Wilson
John WinstonJohn Winston
voiced Lt. Kyle/I.S.S. Enterprise computer
Pete KellettPete Kellett
As Farrell
Vic PerrinVic Perrin
As Tharn
Barbara LunaBarbara Luna
As Lt. Marlena Moreau

Bobby BassBobby Bass
As Chekov's Henchman #1
Bobby Clark (1)Bobby Clark (1)
As Chekov's Henchman #2
David PernaDavid Perna
As Spock's Stunt Double
Jay D. JonesJay D. Jones
As Scott's Stunt Double
Paul BaxleyPaul Baxley
As Capt. Kirk's Stunt Double
Vince Deadrick, Sr.Vince Deadrick, Sr.
As McCoy's Stunt Double
Johnny Mandell (1)Johnny Mandell (1)
As Sulu's Henchman
Nedra RosemondNedra Rosemond
As Uhura's Stunt Double
Paul ProkopPaul Prokop
As Guard
Main Cast
William ShatnerWilliam Shatner
As Captain James Tiberius Kirk
Leonard NimoyLeonard Nimoy
As Commander Spock
DeForest KelleyDeForest Kelley
As Dr. Leonard Horatio "Bones" McCoy


Kirk, Scotty, McCoy, and Uhura with the high council of the planet Halka to negotiate dilithium mining rights. The Halkans are pacifists and believes that their crystals would be used in war, but Kirk gives them the option to reconsider while respecting their wishes. An ion storm hits the planet and Kirk calls for transport. They start to materialize on the Enterprise but there’s an energy surge. They fade out and then rematerialize... on a different Enterprise, wearing different uniforms...

Read the full recap
Episode Notes
Writer Jerome Bixby loosely based the script on his own short story One-Way Street.

This episode was nominated for a Hugo in 1968 for Best Dramatic Presentation.

Production of this episode was temporarily shut down when Barbara Luna came down with a high fever. “The Doomsday Machine” was filmed in the interim.

Vic Perrin (Tharn) also provides the voices of Balok in "The Corbomite Maneuver", the Metron and the Gorn in "Arena" and Nomad in "The Changeling". This is his only on-screen appearance in the series.

Star Trek: Deep Space Nine revisits the mirror universe established in this episode in several episodes starting with the season 2 episode "Crossover."

Episode Quotes
Mirror Spock: (to Mr. Kyle) Carelessness with the equipment cannot be tolerated! Your agonizer, please.

Mirror Spock: I do not wish command. But if it should befall me, I suggest you remember that my operatives would avenge my death. And some of them... are Vulcans.

Mirror Sulu: (to Kirk) Mr. Spock has orders to kill you. He will succeed. Apparently, you will also have killed him, after a fierce fight. Regrettable, but it will leave me in command...

Episode Goofs
The sash Mirror Chekov is wearing appears/disappears/reappears as he gets in the turbolift.

You can DeForest Kelley’s wedding ring during the scene where he does his “I’m a doctor, not an engineer...” line.

James Doohan can be seen in the long shots on the bridge in the final scene, but disappears in the close-ups of Shatner and Kelley.

Episode References
This is the only episode in which Scotty refers to Captain Kirk as "Jim."

What Changed in the Remastered Version
The Halkan planet and the Enterprise were replaced by nicely done CGI effects. The transition to the Mirror Universe, formerly signalled by cutting together scenes of the Enterprise transiting the planet and reversals of the same scenes, was replaced by a better special effect. The I.S.S. Enterprise itself is depicted as a slightly different looking ship - more closely resembling the original model used for the two pilots, looking slightly 'heavier', and with little sensors sticking out of the front of the engine nacelles. Mr. Kyle's agonizer displayed tiny electric shocks (suggestive of a taser) when applied and left a glow that persisted for several seconds after its removal. Chekov's punishment in the Agony Booth was blurred (and the sounds were changed slightly) to suggest the presence of an energy field within the booth.

Other Episode Crew

CreatorGene Roddenberry
Executive ProducerGene Roddenberry
ProducerGene L. Coon
CastingJoseph D'Agosta
Costume DesignerWilliam Ware Theiss
Make-upFred B. Phillips
Property MasterIrving A. Feinberg
OtherHerbert F. Solow (Executive in Charge of Production)
Director of PhotographyGerald Perry Finnerman
Art DirectorWalter M. Jefferies
Special EffectsJames Rugg
Main Title ThemeAlexander Courage
Missing Information
Click here to add Music
Click here to add Cultural References