For other uses, see Mirror, Mirror.

"Mirror, Mirror" was the 39th episode of Star Trek: The Original Series, and was novelized in Star Trek 3 by James Blish.


Beaming up from the planet Halkan James T. Kirk, Leonard McCoy, Montgomery Scott and Nyota Uhura find themselves accidentally transported to a parallel universe where the United Federation of Planets had been transformed into a vicious and ruthless Terran Empire and their evil twins have been transported to their universe!



Episode charactersEdit

Pavel ChekovPavel Chekov (mirror)Davis (mirror)Farrell (mirror)GaffneyBill HadleyBill Hadley (mirror)James T. KirkJames T. Kirk (mirror)John KyleWinston Kyle (mirror)Roger Lemli (mirror)Ryan LeslieLeonard McCoyLeonard McCoy (mirror)Marlena MoreauMarlena Moreau (mirror)Montgomery ScottMontgomery Scott (mirror)SpockSpock (mirror)Hikaru SuluHikaru Sulu (mirror)TharnTharn (mirror)Nyota UhuraNyota Uhura (mirror)Wilson (mirror)ISS Enterprise computer
Referenced only 
Christopher Pike (mirror)Kenner

Novelization charactersEdit

Pavel ChekovPavel Chekov (mirror)James T. KirkLeonard McCoyMontgomery ScottSpockSpock (mirror)Hikaru SuluHikaru Sulu (mirror)Tharn (mirror)Nyota UhuraISS Enterprise computer
Referenced only 
Karl Franz (mirror)Henry MorganMoreau

Starships and vehiclesEdit

ISS Enterprise (Constitution-class (mirror) heavy cruiser) • USS Enterprise (Constitution-class heavy cruiser)


Gorlan (planet)HalkaS Doradus IXHalka (mirror)Vega IXHalkan systemPanama

Races and culturesEdit

GorlanHalkanHalkan (mirror)HumanTerran (mirror)Vulcan

States and organizationsEdit

FederationGestapoHalkan CouncilStarfleetStarfleet CommandTerran EmpireTerran Empire StarfleetKlingon Empire

Science and classificationEdit

Technology and weaponsEdit

agony boothagonizercommunicatordaggerphaserphaser couplingTantalus fieldtransporter

Rank and titlesEdit

admiralcaptaincaptain's womanchief engineerchief medical officercommandercommanding officercommunications officerdoctorEmperor of the Terran Empireensignfirst officerhelmsmanlieutenantlieutenant commandernavigatorscience officersecuritysecurity officersecurity chieftacticaltactical officer

Other referencesEdit

2267alternate realityassassinationcreditdilithiumemergency manual monitorGorlan uprisingHalkaion stormlanding partymagnetic stormMartian scopolamandermirror universeparallel universepiracyscopolamanderTerran salutevoyages of the USS Enterprise (2264 to 2270)Vulcan mind meld


Related mediaEdit



  • The stardate of 3823.7 is derived from Q-Squared. The format of this stardate is in keeping with the four-digit standard maintained in TOS. Another source provides a contradictory date, as Dark Mirror asserts that "Mirror, Mirror" occurs on stardate 4428.9. It is possible that this one or the other derived from a different system of dates.


Episode imagesEdit

Character and affiliation imagesEdit
Starship and vehicle imagesEdit
Technology and weapon imagesEdit
Planet and location imagesEdit

Adaptation imagesEdit

Related storiesEdit

Stories featuring the mirror universe
Enterprise episode: "In a Mirror, Darkly" • prose: Age of the Empress • "Nobunaga"
Discovery episodes: "Into the Forest I Go" • "Despite Yourself" • "The Wolf Inside" • "Vaulting Ambition" • "What's Past Is Prologue" • comics: Succession ("Issue 1" • "Issue 2" • "Issue 3" • "Issue 4")
The Original Series episode: "Mirror, Mirror" • comics: The Mirror Universe Saga ("... Promises to Keep" • "Double Image" • "Deadly Reflection!" • "The Tantalus Trap!" • "Masquerade!" • "Behind Enemy Lines!" • "The Beginning of the End..." • "Homecoming...") • Fragile GlassMirror Images ("Issue 1" • "Issue 2" • "Issue 4" • "Issue 5") • "The Mirror, Crackedprose: SpectreDark VictoryPreserverThe Sorrows of Empire • "Ill Winds" • "The Greater Good" • video game: Shattered Universe
Kelvin timeline comics: Mirrored ("Part 1" • "Part 2") • "Parallel Lives, Part 2" • Live Evil ("Part 1" • "Part 2" • "Part 3")
The Next Generation comics: "Mirror Images, Issue 3" • TNG - Mirror Broken comics: "Origin of Data", "Prelude", "Issue 1", "Issue 2", "Issue 3", "Issue 4", "Issue 5" • TNG - Through the Mirror comics: "Issue 1", "Issue 2", "Issue 3", "Issue 4", "Issue 5" TNG - Ripe for Plunder comics: "Chapter One", "Chapter Two", "Chapter Three", "Chapter Four", "Chapter Five" • TNG - Terra Incognita comics: "Issue 1", "Issue 2", "Issue 3", "Issue 4", "Issue 5", "Issue 6" • prose: Dark MirrorThreeThe Worst of Both Worlds • "The Traitor" • "The Sacred Chalice" • "For Want of a Nail" • Rise Like Lions
Deep Space Nine episodes: "Crossover" • "Through the Looking Glass" • "Shattered Mirror" • "Resurrection" • "The Emperor's New Cloak" • comic: "Enemies & Allies" • prose: Dark PassionsWarpathSaturn's ChildrenFearful Symmetry • "A Terrible Beauty" • The Soul Key • "Freedom Angst" • Disavowed
Voyager prose: The Mirror-Scaled Serpent • "Bitter Fruit" • comic: "Mirrors & Smoke"
New Frontier comics: Turnaround ("Part I" • "Part II" • "Part III" • "Part IV" • "Part V") • prose: Cutting Ties • "Homecoming"
Klingon Empire prose: "Family Matters" Titan prose: "Empathy" Vanguard prose: "The Black Flag"
Miniseries and anthologies RPG sourcebook: Through a Glass, Darklycomics: The Mirror Universe SagaTurnaroundMirror Imagesprose: Mirror Universe TrilogyMirror Universe (Glass EmpiresObsidian AlliancesShards and Shadows)


published order
Previous episode:
The Apple
TOS episode produced Next episode:
The Deadly Years
Previous episode:
The Changeling
TOS episode aired Next episode:
The Apple
Previous story:
Assignment: Earth
Star Trek 3
Next story:
Friday's Child
chronological order
Previous Adventure:
The Apple
Pocket Next Adventure:
The Deadly Years
Previous Adventure:
The Apple
Voyages of the
USS Enterprise (NCC-1701)
(2264 to 2270)
Next Adventure:
The Deadly Years

External linkEdit

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