The Sinner — Season 4
8 episodesFirst aired 13 October 2021
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.
E1Part I
6.8Oct 202154m
Ambrose visits the town of Clark Harbor for a getaway and finds himself at the center of a tragedy.
E2Part II
7.5Oct 202145m
A new suspect leads the investigation into an ongoing feud between the Lams and the Muldoons.
E3Part III
7.4Oct 202145m
Ambrose heads to the mainland to learn more about Percy's past and uncovers dark family secrets.
E4Part IV
7.5Nov 202146m
When the Muldoons push to close the investigation, Ambrose refuses, pushing Sonya to the brink.
E5Part V
7.8Nov 202147m
Ambrose discovers the source of Percy's ritualistic practices and dives deeper into her past.
E6Part VI
7.9Nov 202145m
A shocking new crime further rattles the town of Clark Harbor; Ambrose and Meg team together.
E7Part VII
8.0Nov 202143m
Unsure whom to trust, Ambrose hunts down his pursuers.
E8Part VIII
7.7Dec 202157m
Ambrose exposes the secret that threw Percy's life off course, setting off widespread consequences.