Harry and Macy make a startling discovery; Maggie teams up with Abby against an unlikely foe.

The team investigates a pilot who may be using his career for murder; Angie copes with Vega.

With Galactica on the verge of falling apart, Admiral Adama readies the ship for what could be its final mission, as Baltar’s Six warns that humanity’s final chapter is near.

D’Anna holds President Roslin and other Colonials hostage in order to draw out the Final Five from the Colonial fleet. Col. Tigh believes he has the solution to end the…

Loyalties are made clear when Gaeta orchestrates a coup d’état of the Adama regime. Both prisoners and lives are taken as many of the fed up people work to take…

Amara unleashes a dark fog on a small town, causing everyone to go mad. Dean and Sam realize this is a stronger version of the original black vein virus Amara…

Sam has a vision of Dean shooting a defenseless man, and they go to the town of River Grove, where they find the townspeople have been possessed by a virus…