Former FBI agent Ryan Hardy is drawn out of retirement when serial killer Joe Carroll escapes from prison; the investigation reveals that Carroll has a cult following.
Ryan, Agent Weston and FBI Specialist Debra Parker investigate the history of Carroll's psyche; Emma, Jacob and Paul hold Claire's son while they plan for their next move.
Hardy and the FBI try to predict the actions of a new follower named Rick (Michael Drayer); Paul's jealousy reaches a breaking point; the beginning of Carroll and Hardy's relationship is revealed.
Maggie devises a plan to put an end to Hardy; Paul reveals a secret that Jacob has been hiding from Emma; Hardy and Claire's relationship is explored.
As Hardy and the team make their next move, panic spreads at the followers' hideout; Carroll seeks out a lawyer from his past.
A new follower reveals Carroll's true intentions; Hardy tries to turn Jacob, Emma and Paul against one another; Emma makes a surprising decision.
Kevin Bacon
Ryan Hardy
James Purefoy
Joe Carroll
Shawn Ashmore
Agent Mike Weston
Jessica Stroup
Max Hardy
Sam Underwood
Mark