Season three brings us to Boston's high society Beacon Hill. Having left the FBI and thrown his badge into Boston Harbor, Jackie Rohr lands a lavish new gig running security for a wealthy family. Life is good until secrets begin to unravel. When an investigation opens, ADA Decourcy Ward sees an opportunity to finally rip out the machinery perpetuating a broken criminal justice system. Siobhan Quays, representing a construction worker who was severely injured on the Big Dig, encounters the city's corruption firsthand, all while coping with the traumatic events of her past year. As Jenny Rohr can attest, given her history with her father, some experiences will haunt you beyond your breaking point.

Season two centers on a federal housing project in the Roxbury neighborhood of Boston that is plagued with drug violence and a rightful distrust in local law enforcement. As coalition leader Grace Campbell works tirelessly on behalf of the community, her efforts are undermined by gang activity happening right under her nose. Enter irreverent FBI agent Jackie Rohr, who is here to exploit Boston's defective criminal justice system in a desperate attempt to salvage his own career.

Idealistic Assistant DA Decourcy Ward and corrupt-yet-venerated FBI veteran Jackie Rohr come together in the early 1990s to take on a family of armored car robbers in a case that grows to subvert the entire criminal justice system of Boston.