The Sinner - Episode Guide

A housewife stabs a beachgoer to death, which sparks an investigation and creates confusion in a small town.

Cora tries to block Ambrose's investigation; Mason struggles to come to terms with secrets from Cora's past.

Ambrose uncovers a secret about Cora that changes the course of the investigation; Mason takes matters into his own hands.

Cora tries to recover missing memories with Ambrose's help; Ambrose discovers a new suspect.

After the discovery of a body in the woods, more questions arise.

When Ambrose begins to waver, Cora convinces him to take a risk for the case.

Cora finally remembers the night in question.

Cora's fate is determined.

A troubled detective returns to his hometown to investigate why a young boy would kill his parents.

Ambrose and Heather begin to unravel where Julian is from; Julian is thrust into a new world.

Heather makes a startling realization about Marin; Vera and Julian are dealt a hard blow.

Ambrose returns to Mosswood to confront Vera about the commune's work.

As Ambrose zeroes in on a new suspect, a rift develops between him and Heather.

Vera reveals Mosswood's past to Ambrose, leading to a turn in Julian's case.

Heather and Ambrose search for Julian.

Heather and Ambrose continue their search for Julian as Marin's past is unraveled.

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

With the baby due in a week, Jamie begins to crack. He relives memories of his and Nick's disturbing relationship before the fateful crash. Ambrose finds some CCTV footage that convinces him things are not as they seem. The gloves come off between Jamie and Ambrose. A freshly dug grave poses more questions.

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 centre 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.