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Lesser Evil is a Star Trek: Deep Space Nine novel by Robert Simpson, released by Pocket Books in November 2002. Lesser Evil is the fourth and final novel in the Mission Gamma miniseries and forms part of the "relaunch" series of novels, taking place after What You Leave Behind.


Chaos erupts aboard Deep Space 9 as the crew begins a desperate search for a killer in their midst, catapulting Colonel Kira Nerys on a dangerous chase into the heart of the Federation. But the crime she seeks to avenge is part of a plot more ancient and far-reaching than anyone suspects, and that secret, if exposed, could divide worlds throughout the Alpha Quadrant.
Meanwhile, as the Starship Defiant makes its way back toward the wormhole and home to DS9, a startling discovery shakes Commander Elias Vaughn to his core and brings to light the truth behind the most tragic mission of his long life. As the crew struggles with the implications of what they've found, their captain's judgment comes into question...and casts doubt on the final outcome of their historic voyage through the Gamma Quadrant.

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Bajor; Bajoran; Bajoran Militia; Borg; Cardassian; Deep Space 9; USS Defiant; USS Gryphon; Human; Starfleet; Trill

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