Fleet-wide paranoia reaches a new peak when word leaks out that the Cylon Sharon (Grace Park) is secretly being kept alive aboard Galactica. After her husband’s cruel death during a Cylon raid, Sesha Abinell (Dana Delaney) can't stomach thought of a Cylon providing enemy intelligence to Galactica – she knows the Cylon is just manipulating Admiral Adama (Edward James Olmos). Assisted by three sympathizers, Sesha pulls a weapon in a bar aboard Cloud Nine and holds its occupants hostage, among them Ellen Tigh (Kate Vernon) and the uneasy romantic triangle of Apollo (Jamie Bamber), Dualla (Kandyse McClure) and Billy (Paul Campbell). Kara Thrace (Katee Sackhoff) makes a bold move to rescue the hostages that goes terribly wrong. In the end, vengeance for Sesha comes at a very high price as a much-loved human is sacrificed on her altar of vengeance.
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