Season 4

The Sinner

8 Episodes ★ 7.6 Premiered October 13, 2021

Season Overview

Still reeling from the trauma of a previous case a year ago, the now-retired Harry Ambrose travels to Hanover Island in northern Maine for a recuperative getaway with his partner Sonya, but when an unexpected tragedy occurs involving Percy Muldoon, the daughter of a prominent island family, Ambrose is recruited to help the investigation, only to be thrown into a mystery of mounting paranoia that will turn this sleepy tourist island, and Ambrose’s life, upside down.

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Episodes

Part I

Part I

Oct 13, 2021

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

View Details 54 MIN

Part II

Part II

Oct 20, 2021

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

View Details 45 MIN

Part III

Part III

Oct 27, 2021

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

View Details 45 MIN

Part IV

Part IV

Nov 3, 2021

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

View Details 46 MIN

Part V

Part V

Nov 10, 2021

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

View Details 47 MIN

Part VI

Part VI

Nov 17, 2021

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

View Details 45 MIN

Part VII

Part VII

Nov 24, 2021

Unsure whom to trust, Ambrose hunts down his pursuers.

View Details 43 MIN

Part VIII

Part VIII

Dec 1, 2021

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

View Details 57 MIN