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Top Cast
Keira Knightley
Loretta McLaughlin
Carrie Coon
Jean Cole
Chris Cooper
Jack Maclaine
Alessandro Nivola
Detective Conley
Rory Cochrane
Detective Deline
David Dastmalchian
Albert DeSalvo
Peter Gerety
Eddie Corsetti
Robert John Burke
Eddie Holland
Ryan Winkles
Daniel Marsh
Morgan Spector
James McLaughlin
Michael Malvesti
Detective Donovan
Aurora McLaughlin
Maggie
Liam Anderson
Tommy
Antonio Volpicelli
Patrick
Nancy E. Carroll
Mary McDermott
Therese Plaehn
Kelly
Stephen Thorne
Frank Cole
Greg Vrotsos
George Nassar
Ian Lyons
Gordon Nielson
Christian J. Mallen
Paul Dempsey
Pat Fitz
The Killer
Pamela Jayne Morgan
Anne Samans
Robert C. Kirk
Arthur
Charlie Thurston
Fritz
Kate Middleton
Phyllis
Ivan Martin
Stanley
Kate Avallone
Lifestyle Editor
Tamara Hickey
Ellie
Luke Kirby
F. Lee Bailey
Thomas Kee
Richard DeSalvo
Kyra Weeks
Emmie
John Lee Ames
Harrison
Richard O'Rourke
Old Addict
James Ciccone
Detective Linski
Bill Camp
Commissioner McNamara
Jimmy LeBlanc
Officer Dougan
Gary Galone
Belmont Detective
David Conley
Old Desk Cop
Josh Drennen
Sergeant Burke
Brian Faherty
Officer Sullivan
Caroline Nesbit
Jane Sullivan
Michele Proude
Anna Slesers
Grace Aiello Antczak
Claire
Sheriden Thomas
Nina Nichols
Rosemary Howard
Helen Blake
Kris Sidberry
Sophie Clark
Sissy O'Hara
Ida Irga
Kate Lynch
Beverly Samans
Corinne Ognibene
Strangler Victim
Erin Rose
Assault Victim
Caitlin Zerra Rose
Young Woman
Laura Darrell
Karen
Lydia Harrell
Ms. Thompson
Paula Plum
Mrs. Quinn
Jake Casper
College Kid
Danny Connelly
Building Super
Frank Ridley
Ida's Super
Bill Mootos
Dr. Grayson
Jennifer Lafleur
Nurse Patty
Danielle Perry
Nurse Deb McNulty
Moira Driscoll
Psych. Orderly
Victor Warren
Director
Bill Thorpe
Brawny Detective
Mike Bash
Inmate
Marissa Carpio
Production Assistant
James Wilcox
Police Examiner
Michael Tow
JC Kim
Jonathan Fielding
Herald Reporter
Owen Burke
Officer Shanley
Al Conti
Boston PD Detective (uncredited)