This episode is dedicated to Jerome Bixby, who died almost a year before this episode aired. He wrote the very first Mirror Universe episode Mirror, Mirror (1967).
The Intendant is the only mirror universe character to appear in all five Deep Space Nine episodes to deal with that universe.
Like the episode "Rejoined", this episode also contains a kiss between two women: The Intendant and the mirror Ezri. Nana Visitor was not particularly enamored of the scene however; "I never intended for Intendant to be bisexual. I think that was an assumption that everyone, including the writers, made after the character fell for Kira in "Crossover". But that had been total narcissism on her part. It had nothing to do with sexuality."
The fifth and last Mirror Universe episode of Deep Space Nine.
The episode was the tenth and final Deep Space Nine episode to be directed by LeVar Burton, who played Geordi La Forge in Star Trek: The Next Generation (1987). The previous DS9 episode he had directed was also a mirror universe episode, "Resurrection".