Jimmy Markum
Sean Penn
Dave Boyle
Tim Robbins
Sean Devine
Kevin Bacon
Whitey Powers
Laurence Fishburne
Celeste Boyle
Marcia Gay Harden
Annabeth Markum
Laura Linney
Val Savage
Kevin Chapman
Nick Savage
Adam Nelson
Brendan Harris
Thomas Guiry
Katie Markum
Emmy Rossum
Silent Ray Harris
Spencer Treat Clark
Young Dave
Cameron Bowen
John O'Shea
Andrew Mackin
State Trooper
Matty Blake
Sibling
Andrew Blesser
Cop at Barricade
Douglass Bowen Flynn
Kevin Savage
Robert Wahlberg
Michael
Cayden Boyd
Esther Harris
Jenny O'Hara
Medical Examinder
Charley Broderick
Dave's Friend
Ken Cheeseman
Driver
John Doman
Young Jimmy
Jason Kelly
Boston Police Officer
Brad R. Douglas
Young Sean
Connor Paolo
Jimmy's Father
T. Bruce Page
Nadine Marcum
Celine du Terte
Sean's Father
Miles Herter
Mr. Reed
Shawn Fitzgibbon
Eve Pigeon
Ari Graynor
Lauren Devine
Tori Davis
Bartender
Lance Norris
Pete
Jonathan Togo
Priest
Ed O'Keefe
Bar Patron
John Franchi
Worker
John Pungitore
Diane Cestra
Zabeth Russell
Drew Pigeon
Joe Stapleton
FBI Agent Birden
Will Lyman
Boston Cop
Martin Stephen O'Neil
Nadine Markum
Celine du Tertre
Boston Police Officer
Anthony Taurasi
Police Detective
Brian Van Kay
Mrs. Prior
Susan Willis
Sara Marcum
Jillian Wheeler
CSS Tech
Tom Kemp
Spectator
Kris Williams
Trooper Jenny Coughlin
Celeste Oliva
Handcuffed Man
Patrick Shea
Detective
Scott Winters
'75 Reporter
Michael McGovern
Lt. Friel (as Jose Ramon Rosario)
José Ramón Rosario
Clint Eastwood
Lab Technician
Lonnie Farmer
Loudmouth Cop
Bates Wilder
Neighbor at Barricade
Bill Thorpe
Reporter
Jim Smith
Solicitor in Car
Duncan Putney
Helicopter Pilot
Bill Richards
Helicopter Pilot
Michael Peavey
Liquor Store Owner [uncredited]
Eli Wallach