Keira Knightley Loretta McLaughlin
Carrie Coon Jean Cole
David Dastmalchian Albert DeSalvo
Morgan Spector James McLaughlin
Ridley Scott Producer
Bill Mootos Dr. Grayson
Chris Cooper Jack Maclaine
Rosemary Howard Helen Blake
Robert John Burke Eddie Holland
Charlie Thurston Fritz
Alessandro Nivola Detective Conley
Rory Cochrane Detective Deline
Bill Camp Commissioner McNamara
Brian Faherty Officer Sullivan
John Lee Ames Harrison
Matt Ruskin Director, Writer
Tom Ackerley Producer
Frank Ridley Ida's Super
Paula Plum Mrs. Quinn
Luke Kirby F. Lee Bailey
Bill Thorpe Brawny Detective
Jennifer Lafleur Nurse Patty
Christian Mallen Paul Dempsey
Stephen Thorne Frank Cole
Ian Lyons Gordon Nielson
Margaret Codola Set Costumer
Pamela Jayne Morgan Anne Samans
Patrick Thomas O'Rourke Visual Effects Producer
Peter Gerety Eddie Corsetti
Josey McNamara Producer
Pat Fitz The Killer
James Wilcox Police Examiner
Marissa Carpio Production Assistant
Kevin J. Walsh Producer
Michael Malvesti Detective Donovan
Kevin Jung Foley Recordist
Robert Fernandez Sound Re-Recording Mixer
Therese Plaehn Kelly
Richard O'Rourke Old Addict
Anthony Raymond Set Designer
Owen Burke Officer Shanley
Timothy Lewis Assistant Art Director
Tamara Hickey Ellie
Kate Middleton Phyllis
Danny Connelly Building Super
Al Conti Boston PD Detective (uncredited)
Gary Galone Belmont Detective
Julie LeShane Makeup Department Head
Josh Drennen Sergeant Burke
Jeanie Baker Costume Supervisor
Damian Volpe Supervising Sound Editor, Sound Re-Recording Mixer
Kris Sidberry Sophie Clark
James Ciccone Detective Linski
Michael Tow JC Kim
Gina B. Cranham Art Direction
Mike Bash Inmate
Risa Uchida Battis Set Dresser
Kate Avallone Lifestyle Editor
Greta Ruljevaite Visual Effects Producer
Jimmy LeBlanc Officer Dougan
Ivan Martin Stanley
Kate Lynch Beverly Samans
David Conley Old Desk Cop
John P. Goldsmith Production Design
Michael A. Pruss Producer
Filipe Messeder Sound Effects Editor
Robert C. Kirk Arthur
Michael Potter Other
Arjun Bhasin Costume Design
Moira Driscoll Psych. Orderly
Michael Fottrell Executive Producer
Kyra Weeks Emmie