When notorious serial killer Joe Carroll escapes from death row and embarks on a new killing spree, the FBI calls former agent Ryan Hardy to consult on the case. Having since withdrawn from the public eye, Hardy was responsible for Carroll's capture nine years ago. Hardy knows him better than anyone ; he is perhaps Carroll's only psychological and intellectual match. But the Ryan Hardy who broke the Carroll case years ago isn't the same man today. Wounded both physically and mentally by his previous pursuit of this serial killer, Hardy isn't calling the shots on this case. He works closely with an FBI team, which considers Hardy to be more of a liability than an asset.
New information leads Max, Ryan and Weston closer to uncovering the mole within the FBI; Joe and Micah launch a plan that sends a message to Ryan and the world.
In hope of finding new answers, Ryan searches for the man who taught Joe to kill; Mandy and Emma wait for Joe to reveal his plan.
Ryan and the FBI's search for Lily Gray is redirected when Max is faced with a new threat; Joe, Mandy and Emma realize everything isn't what it seems at their new hideout.
Ryan and Max turn to the FBI for back-up on their plan; Joe's relationship enters uncharted territory; Luke ends up in a troubling situation.
In an attempt to learn new information, Ryan and Max capture a suspect. But complications lead to a game of dangerous cat and mouse. Also, Joe grows accustomed to his surroundings and establishes a plan of his own, while Emma realizes she is in dangerous company.