With Joe Carroll's execution day upon them, the team remains on edge, expecting that he won't go easily. Their fears are realized when a hostage situation at the prison forces Ryan to go in alone, as the whole world watches.

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.