The Sinner (TV) Cast
The cast of The Sinner. Updated on August 17, 2025.
82 actors
Bill Pullman
as Harry Ambrose (32 episodes)

Harry Ambrose is a police detective who delves into the complex motivations behind crimes committed by unexpected perpetrators.

Jessica Biel
as Cora Tannetti (8 episodes)

Cora Tannetti becomes a central figure in the first season after committing a shocking act of violence.

Christopher Abbott
as Mason Tannetti (8 episodes)

Mason Tannetti is Cora Tannetti's husband who is drawn into the complexities of her criminal case.

Frances Fisher
as Meg Muldoon (8 episodes)
Alice Kremelberg
as Percy Muldoon (8 episodes)
Abby Miller
as Caitlin Sullivan (8 episodes)

Caitlin Sullivan is a dedicated police officer working alongside Harry Ambrose.

Neal Huff
as Sean Muldoon (8 episodes)
Cindy Cheung
as Stephanie Lam (8 episodes)

Stephanie Lam is connected to a local community implicated in one of the seasons' stories.

Ronin Wong
as Mike Lam (8 episodes)
Jessica Hecht
as Sonya Barzel (16 episodes)

Sonya Barzel is a painter who becomes embroiled in a criminal investigation.

Michael Mosley
as Colin Muldoon (8 episodes)
Dohn Norwood
as Dan Leroy (9 episodes)

Dan Leroy is a colleague of Harry Ambrose in law enforcement.

Natalie Paul
as Heather Novack (8 episodes)
Carrie Coon
as Vera Walker (8 episodes)
Hannah Gross
as Marin (8 episodes)
Elisha Henig
as Julian Walker (8 episodes)
Eddie Martinez
as Vic Soto (8 episodes)
Parisa Fitz-Henley
as Leela Burns (8 episodes)
David Call
as Andy "Brick" Brickowski (8 episodes)
Matt Bomer
as Jamie Burns (8 episodes)
Qurrat Ann Kadwani
as Reporter #1 (1 episode)
Enid Graham
as Elizabeth Lacey (7 episodes)
Patti D'Arbanville
as Lorna Tannetti (5 episodes)
Robert Funaro
as Ron Tanetti (3 episodes)
Adrienne Acevedo Lovette
as Cora's Cellmate (1 episode)
Augie Murphy
as Cora (age 13) (1 episode)
Rileigh McDonald
as Phoebe (age 9) (1 episode)
Joanna Adler
as Detective Farmer (3 episodes)
Nadia Alexander
as Phoebe (age 19) (4 episodes)
John Rue
as Henry (1 episode)
Monique Vukovic
as Erica, the bartender (2 episodes)
Patrick Noonan
as Fire Chief (1 episode)
Glory Simon
as Jeannie the Waitress (2 episodes)
Rob Yang
as Scott (1 episode)
Lynn Marocola
as NYPD Officer (uncredited) (1 episode)
Caroline Kiebach
as Dive Bar Patron (uncredited) (1 episode)
Debbie Troche
as Rosie (1 episode)
Luke David Blumm
as Eli (4 episodes)
Gary Lee Mahmoud
as Dr. Abdi Pasdar (1 episode)
DeLance Minefee
as Reporter #2 (1 episode)
Antonio Ortiz
as Mike Kelnoff (2 episodes)
Brady Jenness
as Young Ambrose (6 episodes)
Blair Langille
as Roy (1 episode)
Sean Skerry
as Sam (1 episode)
Walter T. Flower
as Patron (1 episode)
Kim Roberts
as Greta (2 episodes)
Mauralea Austin
as Cynthia (2 episodes)
Sharleen Kalayil
as Nancy (1 episode)
Ben Stone
as Jasper (1 episode)
Chik White
as Diez (2 episodes)
Ambyr Dunn
as Risa (1 episode)
Niamh Wilson
as Caroline (1 episode)
Charlie Boyle
as Emily (1 episode)
Stephane Gaudet
as Taller Guy (1 episode)
Darren Jones
as Man in Suit (1 episode)
Anthony MacPherson
as Shorter Guy (1 episode)
Estelle Trudel
as Violet (1 episode)
Christian Murray
as Owen (1 episode)
Eugene Sampang
as Medical Examiner (1 episode)
Jessica Marie Brown
as Kerry (2 episodes)
Taylor Olson
as Patrick (1 episode)
Zach Faye
as Officer Josh Moore (5 episodes)
Samantha Brown
as Kat Keyser (1 episode)
Martha Irving
as Belle Keyser (3 episodes)
Emerson MacNeil
as Ash Lanier (1 episode)
Dylan Brentwood
as Black Jacket (1 episode)
Luciana Silvestre Fernandes
as Celia Gomes (1 episode)
Manuel Rodriguez-Saenz
as Raffa Dominguez (1 episode)
Nikki Barnett
as Rhonda (3 episodes)
Diane Carey
as Belle's Friend (1 episode)
Scott McCord
as Verne Novak (2 episodes)
Orin Dash
as Hal (1 episode)
David Light
as Paramedic (1 episode)
Joe Cobden
as Chief Lou Raskin (7 episodes)
Mercedes de la Zerda
as Emiliana 'Em' Castillo (5 episodes)
David Huynh
as CJ Lam (6 episodes)
Donald Heng
as Bo Lam (1 episode)
Kathryn MacLellan
as Don's Wife (1 episode)
Steven Anderson
as Blonde Guy (1 episode)
Gharrett Patrick Paon
as Brandon Keyser (7 episodes)
Monte Murray
as Don Lanier (4 episodes)
Reid Price
as Detective Brookes (3 episodes)
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