The Sinner

Season 4 · 8 Episodes

Season 4

Season 4

20218 Episodes

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

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

Guest Stars

Matt Bomer

Matt Bomer

Jamie Burns (archive footage)

Blair Langille

Roy

Sean Skerry

Sean Skerry

Sam

Walter T. Flower

Patron

Kim Roberts

Kim Roberts

Greta

Mauralea Austin

Mauralea Austin

Cynthia

Chik White

Chik White

Diez

Jessica Marie Brown

Kerry

Martha Irving

Martha Irving

Belle Keyser

Nikki Barnett

Rhonda

Joe Cobden

Joe Cobden

Chief Lou Raskin

Mercedes de la Zerda

Mercedes de la Zerda

Emiliana 'Em' Castillo

Zach Faye

Officer Josh Moore

Gharrett Patrick Paon

Gharrett Patrick Paon

Brandon Keyser

Monte Murray

Don Lanier

A new suspect leads the investigation into an ongoing feud between the Lams and the Muldoons.
Written By
Jonathan Caren

Guest Stars

Kim Roberts

Kim Roberts

Greta

Mauralea Austin

Mauralea Austin

Cynthia

Zach Faye

Office Josh Moore

Sharleen Kalayil

Nancy

Ben Stone

Jasper

Chik White

Chik White

Diez

Joe Cobden

Joe Cobden

Chief Lou Raskin

David Huynh

David Huynh

CJ Lam

Gharrett Patrick Paon

Gharrett Patrick Paon

Brandon Keyser

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

Guest Stars

Ambyr Dunn

Risa

Niamh Wilson

Niamh Wilson

Caroline

Charlie Boyle

Charlie Boyle

Emily

Stephane Gaudet

Taller Guy

Darren Jones

Man in Suit

Anthony MacPherson

Shorter Guy

Estelle Trudel

Violet

Nikki Barnett

Rhonda

Joe Cobden

Joe Cobden

Chief Lou Raskin

When the Muldoons push to close the investigation, Ambrose refuses, pushing Sonya to the brink.
Written By
Piero S. Iberti

Guest Stars

Christian Murray

Owen

Eugene Sampang

Medical Examiner

Martha Irving

Martha Irving

Belle Keyser

Joe Cobden

Joe Cobden

Chief Lou Raskin

Mercedes de la Zerda

Mercedes de la Zerda

Emiliana 'Em' Castillo

David Huynh

David Huynh

CJ Lam

Zach Faye

Officer Josh Moore

Gharrett Patrick Paon

Gharrett Patrick Paon

Brandon Keyser

Monte Murray

Don Lanier

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

Guest Stars

Jessica Marie Brown

Kerry

Taylor Olson

Taylor Olson

Patrick

Mercedes de la Zerda

Mercedes de la Zerda

Emiliana 'Em' Castillo

David Huynh

David Huynh

CJ Lam

Gharrett Patrick Paon

Gharrett Patrick Paon

Brandon Keyser

A shocking new crime further rattles the town of Clark Harbor; Ambrose and Meg team together.
Director
Batan Silva
Written By
Gerald Cuesta

Guest Stars

Samantha Brown

Samantha Brown

Kat Keyser

Martha Irving

Martha Irving

Belle Keyser

Emerson MacNeil

Ash Lanier

Dylan Brentwood

Black Jacket

Luciana Silvestre Fernandes

Celia Gomes

Manuel Rodriguez-Saenz

Manuel Rodriguez-Saenz

Raffa Dominguez

Nikki Barnett

Rhonda

Diane Carey

Belle's Friend

Scott McCord

Scott McCord

Verne Novak

Joe Cobden

Joe Cobden

Chief Lou Raskin

David Huynh

David Huynh

CJ Lam

Zach Faye

Officer Josh Moore

Gharrett Patrick Paon

Gharrett Patrick Paon

Brandon Keyser

Monte Murray

Don Lanier

Reid Price

Reid Price

Detective Brookes

Unsure whom to trust, Ambrose hunts down his pursuers.
Director
Batan Silva
Written By
Mia Chung

Guest Stars

Scott McCord

Scott McCord

Verne Novak

Orin Dash

Hal

David Light

Paramedic

Joe Cobden

Joe Cobden

Chief Lou Raskin

Mercedes de la Zerda

Mercedes de la Zerda

Emiliana 'Em' Castillo

David Huynh

David Huynh

CJ Lam

Zach Faye

Officer Josh Moore

Gharrett Patrick Paon

Gharrett Patrick Paon

Brandon Keyser

Reid Price

Reid Price

Detective Brookes

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

Guest Stars

Joe Cobden

Joe Cobden

Chief Lou Raskin

Mercedes de la Zerda

Mercedes de la Zerda

Emiliana 'Em' Castillo

David Huynh

David Huynh

CJ Lam

Donald Heng

Donald Heng

Bo Lam

Zach Faye

Officer Josh Moore

Kathryn MacLellan

Kathryn MacLellan

Don's Wife

Gharrett Patrick Paon

Gharrett Patrick Paon

Brandon Keyser

Monte Murray

Don Lanier

Reid Price

Reid Price

Detective Brookes