Template:Realworld Star Trek: Mirror Universe is a novel series published by Pocket Books. The first two comprise collections of three novels, the third a series of short stories, and the fourth a 'flip book' style story.
The novels are based solely on the mirror universe episodes of Star Trek: The Original Series, Star Trek: Deep Space Nine and Star Trek: Enterprise.
The DS9 novel Fearful Symmetry is part of this series, as well as being the latest edition of the novel series set after "What You Leave Behind". The Deep Space Nine segment "Saturn's Children" also bridges the gap between "The Emperor's New Cloak" and Warpath.
Marco Palmieri recently announced more stories in the series, including some characters who only appear in novels.