A year has passed since the hit thriller's season finale found rogue ex-FBI agent Ryan Hardy (Kevin Bacon) finally capturing his eloquently twisted nemesis Joe Carroll (James Purefoy). With Carroll locked up on Death Row and Hardy back with the FBI, new threats emerge that have Hardy, Mike Weston (Shawn Ashmore) and Hardy's niece Max (Jessica Stroup) on edge and off balance. Unlike the known threat of Joe Carroll, each new danger is potentially more lethal because the FBI isn't exactly sure where it's coming from. But with Mark Gray (Sam Underwood) at large, Joe Carroll still haunting Ryan from prison, and a new, meticulous chameleon-like killer (Michael Ealy) on the scene, Hardy soon realizes that there are psychopaths just as bad as Carroll, and some that are even smarter.