Leonardo DiCaprio

Matt Damon

Jack Nicholson

Mark Wahlberg

Martin Sheen

Ray Winstone

Vera Farmiga

Anthony Anderson

Alec Baldwin

Kevin Corrigan

James Badge Dale

David O'Hara

Mark Rolston

Robert Wahlberg

Kristen Dalton

Thomas B. Duffy

Richard Hughes

J.C. MacKenzie

Mary Klug

Peg Holzemer

Robert 'Toshi' Kar Yuen Chan

Gurdeep Singh

Armen Garo

John Cenatiempo

Joseph Riccobene

Billy Smith

Lyman Chen

Kevin P. McCarthy

Chris Fischer

Brian Smyj

William Severs

Larry Mitchell

Anthony Estrella

Andrew Breving

Tracey Paleo

Douglas Crosby

Dorothy Lyman

Audrie Neenan

Frank Mallicoat

Paula DeMers

Conor Donovan

Amanda Lynch

Sallie Toussaint

Patrick Coppola

Mick O'Rourke

Deborah Carlson

Nellie Sciutto

Peter Welch

Henry Yuk

Dennis Lynch

Michael Byron

William Lee

John Rue

Peter Crafts

Joseph P. Reidy

John Farrer

Paris Karounos

Brian Haley

Terry Serpico

Jay Giannone

John Polce

Bo Cleary

David Conley

Victor Chan

Jill Brown

Sarah Fearon

Denece Ryland

Daniel F. Risteen, Jr.

Francis P. Hughes

Johnny Cicco

Chance Kelly

Shay Duffin

John McConnell

Kenneth Stoddard

Jeffrey Winter

Paddy Curran

Mark Philip Patrick

David Fischer

Walter Y.F. Wong

Tony M. Yee

Francesca Scorsese

Alex Morris

Emma Tillinger Koskoff

Craig 'Radio Man' Castaldo

Takumi Bando

Eric Bruno Borgman

Brendan Burke

Chris Chinn

Jeffrey Corazzini

Jim Ford

Trudi Goodman

Steve Lord

Jack McCullough

Osmani Rodriguez

Lawrence Cameron Steele

Conor Timmis

Joseph Oliveira

Adam Masnyk

John Franchi

Paul McGillicuddy

Martin Scorsese

Ellen Lewis

Graham King

Thelma Schoonmaker

Michael Ballhaus

Brad Grey

Sandy Powell

Brad Pitt

William Monahan

G.A. Aguilar

Kay Georgiou

Steve Kirshoff

Leslie E. Rollins

Kathryn Blondell

Philip Stockton

Kristi Zea

Thomas Lappin

Martha Pinson

Teresa Carriker-Thayer

Joy Zapata

John Caglione Jr.

Andrew Cooper

Carla Raij

Sian Grigg

Donald Mowat

Ron Ames

Tim Monich

Tom Fleischman

Jennifer Dunnington

Tass Filipos

Michael Germain

Erik Knight

Marion Kolsby

Eugene Gearty

Johnny Villanueva

Theodore Suchecki

Allan Zaleski

Bruce MacCallum

Andrew Rowlands

Devin Sterling

Christine Beveridge

Robert Legato

Robert Thayer

Robert Martini

Thomas Stokes

David Davenport

Larry Kaplan

David Ebner

G. Mac Brown

Susan Perlman

Andrew Lau

Alan Mak Siu-Fai

Felix Chong Man-Keung

Brian Ricci

Eric Weinstein

Roy Lee

Doug Davison

Michael Arthur

William 'Billy Jack' Jakielaszek

Timothy Healy

Paul A. Levin

David Swayze

Lisa Shaftel

Chris Cenatiempo

Joseph S. Alfieri

Jac Rubenstein

Robert Griffon Jr.

Lauren Hayward

Peewee Piemonte

Janet Paparazzo

Joseph Zamparelli

Blaise Corrigan

Jodi Michelle Pynn

George B. Colucci Jr.

Shawnna Thibodeau

Marko Costanzo

Jamie Baker

Jeffrey Stern

Marissa Littlefield

Howard Shore

Kam Chan

Cathy Scorsese

To take down South Boston's Irish Mafia, the police send in one of their own to infiltrate the underworld, not realizing the syndicate has done likewise. While an undercover cop curries favor with the mob kingpin, a career criminal rises through the police ranks. But both sides soon discover there's a mole among them.