Detective Ambrose investigates a tragic yet suspicious car accident on the outskirts of Dorchester.

Ambrose looks into Jamie and Nick's relationship before the crash. Jamie begins to unravel.

Ambrose investigates Jamie's past. Leela gives birth as Jamie's anxiety reaches a breaking point.

Ambrose pursues Jamie through New York City and tries to prevent another homicide.

Ambrose urges the NYPD to investigate Jamie for a new crime. Jamie struggles to salvage his life.

Jamie pays Sonya a surprise visit. Ambrose goes to extreme lengths to get a confession.

After a major turn in the case, Ambrose's tactics are scrutinized.

Jamie seeks vengeance, putting him on a collision course with Ambrose.

Ambrose visits the town of Clark Harbor for a getaway and finds himself at the center of a tragedy.

A new suspect leads the investigation into an ongoing feud between the Lams and the Muldoons.

Ambrose heads to the mainland to learn more about Percy's past and uncovers dark family secrets.

When the Muldoons push to close the investigation, Ambrose refuses, pushing Sonya to the brink.

Ambrose discovers the source of Percy's ritualistic practices and dives deeper into her past.

A shocking new crime further rattles the town of Clark Harbor; Ambrose and Meg team together.

Unsure whom to trust, Ambrose hunts down his pursuers.

Ambrose exposes the secret that threw Percy's life off course, setting off widespread consequences.