One year after Joe Carroll's death, Ryan Hardy has moved on with his life. However, events catch up to him when three men wearing Carroll masks stage a bloody subway slaughter. The FBI want Ryan to consult but he claims to have no interest in the new investigation. Meanwhile, some of the surviving Carrolites try to puzzle out who the newcomers are, and Mike tries to deal with the guilt of Debra's death.
Notorious serial killer Joe Carroll, after being found guilty of murdering 14 female students on the Virginia college campus where he taught literature, escapes from death row. The FBI calls former agent Ryan Hardy to consult on the case, as he was the one responsible for Carroll’s capture in 2003. Ryan, working closely with an FBI team, including Mike Weston and FBI Specialist Debra Parker, piece together the ever-growing web of murders orchestrated by the devious Carroll.
As suspicions rise alliances are shaken and no one is safe in the harrowing final heart-stopping moments.
The FBI hunt for Theo continues and the stakes are higher than ever as some of their own come under attack.
A deadly deal is made, but things don’t go as planned, and Ryan makes a decision for his future.
An increasingly reckless Ryan continues his search for Theo, as Mark and Daisy discover information that leads them closer to the FBI than ever and puts Mike in a dangerous situation.
The investigation leads the team to a dangerous serial killer linked to Theo, while Theo and Penny seek refuge from an unknown source with the means of helping them disappear. Meanwhile, Ryan struggles with recent events, sending him into a downward spiral, and the search continues into which agent has been accessing Daisy’s laptop from inside the FBI.