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