In many ways, Resurrection is the mirror universe story that Star Trek: Deep Space Nine has been trying to tell for the better part of three seasons.
It is the most obvious of parallel universes, the classic variant on the “there but for the grace of God…” story that science-fiction tackles so effectively. After all, both Mirror, Mirror and Crossover were episodes that used the mirror universe to posit alternate versions of the Federation and the Occupation. It makes sense that the next logical extension of this Star Trek high concept would be an episode focusing on alternate versions of specific characters. How different would a person be, if they were to be transposed to an entirely different context?
Deep Space Nine tried to touch on this with Through the Looking Glass and Shattered Mirror, two mirror universe episodes that centred around the character of mirror!Jennifer Sisko. Through the Looking Glass allowed Benjamin Sisko to come face-to-face with his long-dead wife, while Shattered Mirror allowed Jake Sisko to spend some time with his deceased mother. Unfortunately, neither episode really lived up to that potential, hampered by weak performances from Felecia Bell and by the distraction of high camp.
Resurrection is very much the third attempt that this very basic story, and suffers a little bit from that sense of fatigue. However, the execution is substantially better this time around. While Philip Anglim is hardly the franchise’s strongest guest performer, he is a better actor than Bell. More than that, keeping the action anchored on the “real” Deep Space Nine stops the story from veering into high camp. It might be damning with faint praise, but Resurrection is probably Deep Space Nine‘s second best mirror universe episode.