Through the Looking Glass
Series: Star Trek: Deep Space Nine
Airdate: April 23, 1995 | Year Set: 2371
Season 3, Episode 19
Summary
Smiley O'Brien from the mirror universe kidnaps Commander Sisko and convines him to impersonate his deceased, mirror universe self in order to persuade the alternate version of his dead wife, Jennifer Sisko, to join the Terran Rebels.