The Sinner: Season 4
2021 · 8 episodes · ★ 7.6
What Season 4 of The Sinner
Harry Ambrose, now retired and still recovering from a previous case, travels with his partner Sonya to Hanover Island, off the coast of northern Maine, for a restorative getaway. Their vacation takes a dark turn when a tragedy involving Percy Muldoon, daughter of an influential island family, occurs. Ambrose agrees to help with the investigation and soon finds himself caught in an atmosphere of paranoia that pits two rival families against each other and turns a tourist island upside down. Tensions rise among suspects, secrets and a community that doesn't want to face the truth.
Season 4 Episodes
4x01 Part I
Ambrose visits the town of Clark Harbor for a getaway and finds himself at the center of a tragedy.
Directing: Derek Simonds · Writing: Derek Simonds · Starring: Matt Bomer, Blair Langille, Sean Skerry, Walter T. Flower
4x02 Part II
A new suspect leads the investigation into an ongoing feud between the Lams and the Muldoons.
Directing: Adam Bernstein · Writing: Jonathan Caren · Starring: Kim Roberts, Mauralea Austin, Zach Faye, Sharleen Kalayil
4x03 Part III
Ambrose heads to the mainland to learn more about Percy's past and uncovers dark family secrets.
Directing: Adam Bernstein · Writing: Jenny Zhang · Starring: Ambyr Dunn, Niamh Wilson, Charlie Boyle, Stephane Gaudet
4x04 Part IV
When the Muldoons push to close the investigation, Ambrose refuses, pushing Sonya to the brink.
Directing: Radium Cheung · Writing: Piero S. Iberti · Starring: Christian Murray, Eugene Sampang, Martha Irving, Joe Cobden
4x05 Part V
Ambrose discovers the source of Percy's ritualistic practices and dives deeper into her past.
Directing: Haifaa al-Mansour · Writing: Kate Roche · Starring: Jessica Marie Brown, Taylor Olson, Mercedes de la Zerda, David Huynh
4x06 Part VI
A shocking new crime further rattles the town of Clark Harbor; Ambrose and Meg team together.
Directing: Batan Silva · Writing: Gerald Cuesta · Starring: Samantha Brown, Martha Irving, Emerson MacNeil, Dylan Brentwood
4x07 Part VII
Unsure whom to trust, Ambrose hunts down his pursuers.
Directing: Batan Silva · Writing: Mia Chung · Starring: Scott McCord, Orin Dash, David Light, Joe Cobden
4x08 Part VIII Season Finale
Ambrose exposes the secret that threw Percy's life off course, setting off widespread consequences.
Directing: Monica Raymund · Writing: Nina Braddock · Starring: Joe Cobden, Mercedes de la Zerda, David Huynh, Donald Heng
Season 4 Cast
Bill PullmanHarry Ambrose8 episodes
Neal HuffSean Muldoon8 episodes
Cindy CheungStephanie Lam8 episodes
Ronin WongMike Lam8 episodes
Jessica HechtSonya Barzel8 episodes
Joe CobdenChief Lou Raskin7 episodes
Gharrett Patrick PaonBrandon Keyser7 episodes
David HuynhCJ Lam6 episodes
Mercedes de la ZerdaEmiliana 'Em' Castillo5 episodes
Martha IrvingBelle Keyser3 episodes
Reid PriceDetective Brookes3 episodes
Kim RobertsGreta2 episodes
Mauralea AustinCynthia2 episodes
Chik WhiteDiez2 episodes
All Seasons
Season 12017 · 8 ep. · 
Season 22018 · 8 ep. · 
Season 32020 · 8 ep. · Where to Watch Season 4 of The Sinner
Subscription
More info and links
Frequently Asked Questions
How Many Episodes Does Season 4 of The Sinner Have?
Season 4 of The Sinner has 8 episodes.
When Did Season 4 of The Sinner Premiere?
Aired October 13, 2021.
Where to Watch Season 4 of The Sinner?
Available by subscription on Netflix and Netflix Standard with Ads (availability may vary by country).
What is the best episode of Season 4?
According to the TMDB audience rating, episode 4x07, "Part VII", with a 7.9.