Sean Penn
Jimmy Markum
Tim Robbins
Dave Boyle
Kevin Bacon
Sean Devine
Laurence Fishburne
Whitey Powers
Marcia Gay Harden
Celeste Boyle
Laura Linney
Annabeth Markum
Kevin Chapman
Val Savage
Tom Guiry
Brendan Harris
Emmy Rossum
Katie Markum
Spencer Treat Clark
Silent Ray Harris
Adam Nelson
Nick Savage
Robert Wahlberg
Kevin Savage
Jenny O'Hara
Esther Harris
John Doman
Driver
Cameron Bowen
Young Dave
Connor Paolo
Young Sean
Cayden Boyd
Michael Boyle
Tori Davis
Lauren Devine
Jonathan Togo
Pete
Shawn Fitzgibbon
Funeral Director
Will Lyman
FBI Agent Birden
Celine du Tertre
Nadine Markum
Ari Graynor
Eve Pigeon
Zabeth Russell
Diane Cestra
Joe Stapleton
Drew Pigeon
Susan Willis
Mrs. Prior
José Ramón Rosario
Lt. Friel
Tom Kemp
CSS Tech
Lonnie Farmer
Lab Technician
Celeste Oliva
Trooper Jenny Coughlin
Bates Wilder
Loud Mouth Cop
Bill Thorpe
Neighbor at Barricade
Matty Blake
Cop in Park
Ken Cheeseman
Dave's Friend in Bar
John Franchi
Bar Patron (uncredited)
Colleen Kelly
Boston Cop (uncredited)
Eli Wallach
Mr. Loonie (uncredited)
Kevin Conway
Theo (uncredited)
Frank Ridley
Police Detective (uncredited)
Kris Williams
Spectator (uncredited)
Jillian Wheeler
Sara Markum (uncredited)
Lance Norris
Bartender (uncredited)
Andrew Mackin
John O'Shea
Jason Kelly
Young Jimmy
T. Bruce Page
Jimmy's Father
Miles Herter
Sean's Father
Charley Broderick
Medical Examiner
Douglass Bowen Flynn
Cop at Barricade
Scott Winters
Detective
Thomas Derrah
Headstone Salesman
Jim Smith
Reporter
Patrick Shea
Handcuffed Man
Duncan B. Putney
Solicitor in Car
Ed O'Keefe
Communion Priest
Dave Zee Garison
'75 Police Officer
Michael McGovern
'75 Reporter
Bill Richards
Helicopter Pilot
Michael Peavey
Helicopter Pilot
John Zaffis
Casino Patron (uncredited)
