Agent Kat Russo arrives at Nick's precinct in search of a criminal who may have taken refuge in The Gates. But the deeper Russo digs, the closer she comes to uncovering the community's dark secrets, and Nick finds he must balance the demands of the Bureau with preserving harmony within The Gates. Elsewhere, Andie's "hunger" leaves her weaker by the day, and Brett is willing to do whatever it takes to keep her sated; on the rebound from his recent breakup, Charlie finds himself with an unexpected new crush; Behind her mother's back, Mia seeks Devon's tutelage in the ways of the Craft; and still reeling from Christian's betrayal, Dylan and Claire struggle to repair their bond.