Star Trek: Enterprise (2001–2005)
19 user 3 critic

In a Mirror, Darkly 

In the mirror universe, the crew of the ISS Enterprise is fighting rebels who oppose the Terran Empire when they discover the Tholians have captured a vessel from the future.


James L. Conway


Gene Roddenberry (based upon "Star Trek" created by), Rick Berman (created by) | 2 more credits »




Episode cast overview:
Scott Bakula ... Cmdr. Jonathan Archer
John Billingsley ... Dr. Phlox
Jolene Blalock ... Lt. Cmdr. T'Pol
Dominic Keating ... Maj. Malcolm Reed
Anthony Montgomery ... MACO Sgt. Travis Mayweather
Linda Park ... Lt. Hoshi Sato
Connor Trinneer ... Cmdr. Charles 'Trip' Tucker III
Vaughn Armstrong ... Capt. Maximilian Forrest
Franc Ross ... Grizzled Man


Another Enterprise is traveling in a mirror universe where everything is a great deal different. Zefram Cochrane shot the first Vulcan setting foot on Earth and mankind went the aggressive way. Today humans have formed the Terran Empire, assimilating many other species, but there's a devastating war with rebels going on. First officer Jonathan Archer disagrees with a decision Captain Forrest is making. He decides to take matters into his own hands and starts a mutiny. In command of the Enterprise, Archer sets course for Tholian space. Reports have shown that the Tholians have captured an Earth ship that might have come from another universe. Written by Arnoud Tiele (

Plot Summary | Add Synopsis


TV-PG | See all certifications »

Did You Know?


A mirror-universe story for Enterprise was originally conceived as a way of bringing William Shatner into the series' fourth season. The Mirror Universe of Captain Kirk would have been revealed to have been sent back in time by way of the Tantalus field and ended up being the cause of the split between the two universes. As he and Paramount were unable to reach an agreement, the plans to have Shatner included in the series were discarded. See more »


The Starfleet chest emblems used for the dead Defiant crew are wrong. The dead crew and later some members of Archer's crew are wearing TOS style uniforms but the emblems are not consistent with what had been worn in Star Trek: The Original Series: The Tholian Web. In "The Tholian Web", the Defiant crew are wearing the traditional "delta" chest insignia. This is visible in several shots as Kirk and the team investigate the ship. Also, Gene Roddenberry and Robert H. Justman had a standing order and reinforced in a 1967 memo that all actors/Starship personnel "wear the Starship emblem that we have established for our Enterprise Crew Members to wear". This memo was posted on a Star Trek BBS. See more »


[first lines]
[from Star Trek: First Contact]
Vulcan Captain: Live long and prosper.
See more »

Crazy Credits

The opening sequence is replaced with footage of various battles and a different theme song to reflect the fact that this is an alternate universe in which the Terrans are a warlike species. See more »


Referenced in Star Trek: Discovery: Despite Yourself (2018) See more »


Where My Heart Will Take Me
Written by Diane Warren
Performed by Russell Watson
Episode: {all episodes}
See more »

User Reviews

The Mirror Universe: The most meaningless part of Trek
5 June 2020 | by borismk-38942See all my reviews

The problem with pretty much any mirror universe episode in any trek series is that they're all equally nonsensical. It gets 3 points because the opening scene with Cochran is actually well done, but the rest is pretty much par for the mirror universe.

The world of the mirror universe never made any sense, their society is so chaotic and ruthless that it probably couldn't survive a year (let alone centuries). Even real authoritarian states are more stable than this (and usually those only last a generation or two).

Also the polar opposite morality is ludicrous to the point of being comical, it's enough to make you think they're deliberately hamming it up. The Borg are a much better foil for the Federation than the Terran Empire, this concept is one that fails in every respect

3 of 11 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 19 user reviews »

Frequently Asked Questions

This FAQ is empty. Add the first question.


Official Sites:

Official site





Release Date:

22 April 2005 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

16:9 HD
See full technical specs »

Contribute to This Page

Recently Viewed