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

Andrew Mackin John O'Shea

Adam Nelson Nick Savage

Robert Wahlberg Kevin Savage

Jenny O'Hara Esther Harris

John Doman Driver

Cameron Bowen Young Dave

Jason Kelly Young Jimmy

Connor Paolo Young Sean

T. Bruce Page Jimmy's Father

Miles Herter Sean's Father

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

Charley Broderick Medical Examiner

Lonnie Farmer Lab Technician

Celeste Oliva Trooper Jenny Coughlin

Bates Wilder Loud Mouth Cop

Douglass Bowen Flynn Cop at Barricade

Bill Thorpe Neighbor at Barricade

Matty Blake Cop in Park

Ken Cheeseman Dave's Friend in Bar

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 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)

John Zaffis Casino Patron (uncredited)