Jimmy Markum
Sean Penn
Dave Boyle
Tim Robbins
John O'Shea
Andrew Mackin
Nick Savage
Adam Nelson
Kevin Savage
Robert Wahlberg
Esther Harris
Jenny O'Hara
Driver
John Doman
Young Dave
Cameron Bowen
Young Jimmy
Jason Kelly
Young Sean
Connor Paolo
Jimmy's Father
T. Bruce Page
Sean's Father
Miles Herter
Sean Devine
Kevin Bacon
Michael Boyle
Cayden Boyd
Lauren Devine
Tori Davis
Pete
Jonathan Togo
Funeral Director
Shawn Fitzgibbon
FBI Agent Birden
Will Lyman
Nadine Markum
Celine du Tertre
Eve Pigeon
Ari Graynor
Diane Cestra
Zabeth Russell
Drew Pigeon
Joe Stapleton
Mrs. Prior
Susan Willis
Whitey Powers
Laurence Fishburne
Lt. Friel
José Ramón Rosario
CSS Tech
Tom Kemp
Medical Examiner
Charley Broderick
Lab Technician
Lonnie Farmer
Trooper Jenny Coughlin
Celeste Oliva
Loud Mouth Cop
Bates Wilder
Cop at Barricade
Douglass Bowen Flynn
Neighbor at Barricade
Bill Thorpe
Cop in Park
Matty Blake
Dave's Friend in Bar
Ken Cheeseman
Celeste Boyle
Marcia Gay Harden
Detective
Scott Winters
Headstone Salesman
Thomas Derrah
Reporter
Jim Smith
Handcuffed Man
Patrick Shea
Solicitor in Car
Duncan B. Putney
Communion Priest
Ed O'Keefe
'75 Police Officer
Dave Zee Garison
'75 Reporter
Michael McGovern
Helicopter Pilot
Bill Richards
Michael Peavey
Annabeth Markum
Laura Linney
Bar Patron (uncredited)
John Franchi
Boston Cop (uncredited)
Colleen Kelly
Mr. Loonie (uncredited)
Eli Wallach
Theo (uncredited)
Kevin Conway
Police Detective (uncredited)
Frank Ridley
Spectator (uncredited)
Kris Williams
Sara Markum (uncredited)
Jillian Wheeler
Bartender (uncredited)
Lance Norris
Casino Patron (uncredited)
John Zaffis
Val Savage
Kevin Chapman
Brendan Harris
Tom Guiry
Katie Markum
Emmy Rossum
Silent Ray Harris
Spencer Treat Clark
Director of Photography
Tom Stern
Sound Re-Recording Mixer
Christopher Boyes
Producer
Robert Lorenz
First Assistant Director
Executive Producer
Bruce Berman
Michael Semanick
Director
Clint Eastwood
Original Music Composer
Stunt Coordinator
Buddy Van Horn
Novel
Dennis Lehane
Production Design
Henry Bumstead
Alan Robert Murray
Screenplay
Brian Helgeland
Judie Hoyt
Editor
Joel Cox
Casting
Phyllis Huffman
Costume Design
Deborah Hopper
Art Direction
Jack G. Taylor Jr.
Set Decoration
Richard C. Goddard
Hairstylist
Jerry DeCarlo
Makeup Artist
Juliet Loveland
Key Hair Stylist
Carol A. O'Connell
Key Makeup Artist
Tania McComas
Second Second Assistant Director
Katie Carroll
Second Assistant Director
Melissa Cummins Lorenz
Set Designer
Jann K. Engel
Adrian Gorton
Supervising Sound Editor
Bub Asman
ADR Supervisor
Juno J. Ellis
Sound Mixer
Walt Martin
Special Effects Coordinator
Steve Riley
Gary Summers
Special Effects
Dominic V. Ruiz
H. Barclay Aaris
Stunts
Paul Marini
John Vincent Mason
Script Supervisor
Mable Lawson-McCrary
Casting Associate
Olivia Harris