The Sinner — Season 4
Her sins will drown them all.
About this season
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.
Episodes (8)
1. Part I
6.7Aired 13 October 2021 • 54 min
Ambrose visits the town of Clark Harbor for a getaway and finds himself at the center of a tragedy.
2. Part II
7.5Aired 20 October 2021 • 45 min
A new suspect leads the investigation into an ongoing feud between the Lams and the Muldoons.
3. Part III
7.5Aired 27 October 2021 • 45 min
Ambrose heads to the mainland to learn more about Percy's past and uncovers dark family secrets.
4. Part IV
7.5Aired 3 November 2021 • 46 min
When the Muldoons push to close the investigation, Ambrose refuses, pushing Sonya to the brink.
5. Part V
7.9Aired 10 November 2021 • 47 min
Ambrose discovers the source of Percy's ritualistic practices and dives deeper into her past.
6. Part VI
8.0Aired 17 November 2021 • 45 min
A shocking new crime further rattles the town of Clark Harbor; Ambrose and Meg team together.
7. Part VII
8.0Aired 24 November 2021 • 43 min
Unsure whom to trust, Ambrose hunts down his pursuers.
8. Part VIII
7.7Aired 1 December 2021 • 57 min
Ambrose exposes the secret that threw Percy's life off course, setting off widespread consequences.