After seeing Holly in the ICU, Jackie reckons with the destructive consequences of his actions, as Rickey Townsend prepares to testify against Decourcy. With violence intensifying between the Copeland Crew and the Braxton Boys, Decourcy, Anton and Siobhan face off in the interrogation room. Grace, left reflecting on her role as a mother and leader in the community, makes an unfortunate miscalculation. And back at the Rohr house, Jenny makes fast friends with the mysterious woman from Belfast.

The episode was rated 7.70 from 308 votes.

With Anton on the lam, Kelvin struggles to lead the Braxton Boys and Jackie homes in on Grace. He knows she's hiding something. Sidelined from the investigation, Decourcy finds himself at a disconnect with Siobhan, as he seeks vengeance and she focuses on recovery. When Cathy’s arrangement with Isaac falls through, she pays a reluctant visit to old friends for help. Jenny, meanwhile, finally uncovers the truth about her new friend.

The episode was rated 7.70 from 287 votes.

As Jackie continues his fling with Letitia Dryden, Jenny sets out to get her husband reinstated in the FBI. The pressure on Decourcy mounts when a colleague competing for the position of DA lands a conviction. Caysen testifies at the federal trial of Tony Suferin and is blindsided by the consequences. A threatening interaction offers Siobhan a sense of what exactly she is up against in her fight for the Mendoza family.

The episode was rated 7.66 from 207 votes.

When an assistant U.S. attorney overdoses and ends up left for dead, Decourcy Ward suspects Jackie Rohr's involvement. Jackie, in turn, goes after the BPD for a questionable drug arrest at Braxton Summit, a federal housing project. Community activist Grace Campbell recruits Siobhan Quays to work on behalf of Braxton and its residents, but their efforts are subverted as tensions flare between rival gangs.

The episode was rated 7.63 from 336 votes.

Jackie strong-arms Jimmy to get a step closer to finding the presumably dead armored truck guards. Decourcy rattles a suspect called to testify before the Grand Jury. Siobhan learns something unsettling about a leader of the Coalition and worries it could jeopardize the future of the group. Kick’s nightmares continue as she senses her father might be in harm’s way.

The episode was rated 7.61 from 586 votes.

Jackie searches for his absent informant as Jenny searches for purpose, revisiting her passion to become a teacher. Decourcy works up a plan to overcome the town’s infamous “Code of Silence” and get a few suspects to talk. Minogue is assigned a big case, but not the one he actually cares about. Jimmy skips town to visit his kids and finds that, even a thousand miles away, he’s not safe from his problems back home.

The episode was rated 7.60 from 657 votes.

After an eventful Sunday at church, Decourcy finds out he has a new powerful enemy in town — one that puts his wife Siobhan in an awkward position. Jackie is stirring up trouble in his own home, and his distrustful mother-in-law Rosa is onto him. Investigators Hank Signa and Rachel Behnam look into an unsolved missing persons case connected to the robbery in Revere. That could mean trouble for Frankie Ryan, who’s busy laundering his most recent loot and, with the help of his brother Jimmy, getting carried away in the process.

The episode was rated 7.58 from 733 votes.

As Decourcy increases pressure on the Justice Department, Jackie counters by looking into his adversary’s romantic past. While Jackie’s digging up dirt, Siobhan is planning ahead, focused on starting a family even as Decourcy remains preoccupied by the escalating conflict. Jenny realizes she can’t keep ignoring her mother after an unsettling phone call. With business at the salon all but dead, Cathy Ryan turns to an unlikely income source.

The episode was rated 7.58 from 327 votes.

Jackie and Decourcy continue to hunt down the weapon connected to the armored truck robbery in Revere. Michaela Freda, a local reporter, gets a tip about a story that could lead her down a treacherous path. Despite the threat of a Grand Jury, Frankie considers what he must do to provide for his family. Pressure on Siobhan begins to mount. After another allegation is brought to her attention, she questions whether doing what is right is ultimately what is for the best.

The episode was rated 7.57 from 550 votes.

In early ‘90s Boston, racism is endemic and crime is widespread. Jackie Rohr, a renowned FBI agent whose methods are not exactly by the book, does not mind the status quo. But Decourcy Ward, the new Assistant District Attorney in town, wants to uproot the corrupt system. The two form an unlikely, and obligatory, alliance to take down a gang of armored truck robbers from Charlestown.

The episode was rated 7.55 from 884 votes.