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Recap / Star Trek: Deep Space Nine S02E23 "Crossover"

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Kira is seeing double
Kira and Bashir have an unusually rough trip through the wormhole on their way back to DS9, and emerge to find the station nowhere in sight. Things get even stranger when they are boarded by Klingons who are initially hostile but immediately become downright apologetic when they see Kira.

They discover that they are in an alternate universe where the Terek Nor station still orbits Bajor and is operated by an Alliance of Bajorans, Cardassians, and Klingons. The station is commanded by Intendant Kira Nerys, the alternate version of Major Kira. Humans in this universe are at best outlaws and at worst slaves; Bashir finds himself relegated to hard labor under the watchful eye of the alternate Odo.

Kira has attracted the Intendant's interest, and is able to learn that they have somehow shifted into the Mirror Universe that Kirk and crew discovered a century earlier. This information gives alternate-O'Brien (who Bashir has managed to persuade to help) an idea for how they might get home... if Bashir can keep from getting killed in the ore processing works and Kira can avoid being trapped as alternate-Garak's political pawn or her alternate-self's sex slave.



  • The Alliance: Between the Klingons and the Cardassians, with Bajor having recently joined.
  • Anyone Can Die: Because the creators didn't originally intend to write any more Mirror Universe stories, this trope is in full effect, with the counterparts of Quark and Odo being killed off quite casually. In future episodes, character deaths would generally be avoided outside of Ferengi.
  • Bad Boss: Mirror Odo, with a side-order of Mean Boss too.
  • Bittersweet Ending: Although the main characters manage to escape and inspire a human rebellion, The Empire is still in charge in the mirror universe and mirror Quark is executed for helping humans escape.
  • Butt-Monkey: No surprise that a Mirror Universe version of O'Brien would also suffer this. He's overworked by both Odo and Sisko (most slaves only have one master to answer to) and his warnings of a thorium leak go unheeded until everything goes to hell.
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  • Chekhov's Lecture: Mirror O'Brien repeatedly warns of an impending thorium leak in ore processing, but nobody cares to listen. By the end of the episode, a serious malfunction occurs.
  • Contrived Coincidence: Kira and Odo being on the Mirror Terok Nor makes sense, but the Mirror versions of Sisko, Quark, and O'Brien all being there too is extremely unlikely, given that the circumstances that lead them there in the normal continuity don't exist in the Mirror Universe. Never mention the existence of Terok Nor, which is designed in the exact same way as the regular counterpart, in the first place.
  • Crapsack World: Despite Kirk indeed managing to convince mirror Spock to reform the Terran Empire for the better, that only made them weak enough for the Cardassian/Klingon/Bajoran alliance to conquer them, resulting in a world where the bad guy won and humans are their slaves.
  • Crazy-Prepared: The Mirror Universe was so scared by Kirk's actions that any figure of authority is to keep an eye out for any sign of a crossover.
  • Dutch Angle: Seems the Mirror Universe runs on this.
  • Embarrassing Nickname: Mirror O'Brien doesn't like being called "Smiley."
  • Even Evil Has Loved Ones: Mirror Kira is horrified at Odo's death, which may be part of why she's much more overtly evil in subsequent appearances. Though in this case it's more that she's lost an efficient slavedriver than a loved one.
  • Even Evil Has Standards: Mirror Kira claims to deplore violence, and seems to mean it.
  • Evil Counterpart: Played straight with Mirror Odo, Garak and Kira, Zig-zagged with Mirror Sisko, and averted with Mirror O'Brien and Quark.
  • Evil Is Hammy: Mirror!Kira is easily the worst offender. Sisko is less evil, but almost as hammy.
  • Fanservice: Tight leather get-ups, bath scenes, swanky dresses, Les Yay out the wazoo...someone in the writers room clearly enjoyed Kira.
  • Happy Ending Override: The original appearance of the Mirror Universe ended on a hopeful note, with mirror-Spock seriously considering Kirk's call to bring down the Terran Empire and replace it with something more enlightened. A century later, the Terran Empire is gone... replaced by a repressive Klingon/Cardassian/Bajoran regime that has enslaved humanity.
  • Kill and Replace: Part of Mirror Garak's plan is to kill Mirror Kira so that our Kira can replace her.
  • Killed Off for Real: Mirror Odo gets blasted apart with a phaser and Mirror Quark is executed, and they don't appear in subsequent Mirror Universe stories.
  • Ludicrous Gibs: This episode displays the effect of a phaser on a changling. Odo explodes into a gooey mess.
  • Make an Example of Them: Mirror Garak wants to do this to a Terran slave who tries to escape, but Mirror Kira considers his methods too brutal. After Bashir kills Mirror Odo, Kira gives Garak permission to do this to the Terrans.
  • Mercy Kill: After getting a confession from Mirror Quark, Mirror Kira has him put to a quick death.
  • Nice Job Breaking It, Hero!: Kirk convincing Spock to try and reform the Terran Empire allowed the Klingons, Cardassians and Bajorans to conquer them and enslave mankind (and presumably the rest of the Empire's subjects). Thanks, Kirk.
  • No Sense of Humor: Mirror!Odo's "Rule of Obedience" #14: "No jokes."
  • No Sense of Personal Space: On first seeing Kira, Mirror Sisko tries stroking her face. Then he tries kissing her.
  • No Time to Explain: Kira telling Bashir that he's in danger.
  • Planet Terra
  • Purple Is Powerful: Both Kiras get matching purple outfits to wear for a party.
  • Say My Name: When Mirror Garak shows up to arrest Mirror Quark:
  • Sexy Walk: And boy does that catsuit show it.
  • Screw Yourself: Intendant Kira clearly wants to get up close and personal with Major Kira.
  • Sequel Episode: To the original series episode "Mirror, Mirror".
  • Then Let Me Be Evil: At first, Intendant Kira tries to justify her ruthless reign as being a show of kindness. After Mirror!Odo is killed, however, she drops all pretenses.
    "This is my reward...for treating you Terrans with the LEAST! Bit! Of respect! Very well! I can learn from my mistakes! You want to set an example, Garak? Use [Bashir], set an example for all Terrans! Slowly, in public view on the Promenade! Let his pleas for mercy ECHO THROUGH THE CORRIDORS for all Terrans to hear!"
  • We Hardly Knew Ye: Mirror Quark only appears in two scenes, and Mirror Odo in just four, before they get killed off.
  • What Happened to the Mouse?: Noted by Bashir and Kira. They meet alternate versions of Odo, Kira, Garak, Quark and Sisko, but there's no sign of Jadzia or Mirror Bashir. They do reappear in the next Mirror Universe episode.


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