When an assistant U.S. attorney overdoses and ends up left for dead outside Saint Eligius Hospital, Decourcy Ward suspects Jackie Rohr's involvement.

Decourcy increases pressure on the Justice Department as Jackie looks into his adversary's past. Siobhan is focused on starting a family. Jenny realizes she can't keep ignoring her mother. Cathy Ryan turns to an unlikely income source.

Jackie hatches a plan to discredit the assistant district attorney. Decourcy hopes to use Jenny against her husband. Siobhan receives some welcome news. Jimmy Ryan faces problems far worse than a guilty conscience.

Jackie reckons with the destructive consequences of his actions. With violence intensifying, Decourcy, Anton and Siobhan face off in the interrogation room. Grace makes an unfortunate miscalculation. Jenny befriends a mysterious woman.

Jackie schemes his way into a new mission as Karen Shimizu tries to get rid of him. Decourcy and Siobhan spar on opposing sides of a legal battle. Grace tries to help her son. Jenny surprises Benny with some rebellious fun.

Kelvin struggles to lead the Braxton Boys. Jackie homes in on Grace. Decourcy finds himself at a disconnect with Siobhan, as he seeks vengeance while she focuses on recovery. Cathy pays a visit to old friends.

Jackie confronts Grace, who can no longer sidestep her sons' criminal activity. A resentful Decourcy finds comfort in the strength of Siobhan, who keeps her head even after tragedy strikes. Jenny insists on helping Maeve.

Decourcy pursues justice in and out of the courtroom. Despite his maneuvering, Jackie discovers he can't escape his past, and Jenny finally confront hers. Cathy says goodbye to the root of her struggles. Siobhan has sights on a new dream.