Casts

• 

  Johnny Depp

  James 'Whitey' Bulger

• 

  Joel Edgerton

  John Connolly

• 

  Julianne Nicholson

  Marianne Connolly

• 

  Dakota Johnson

  Lindsey Cyr

• 

  Kevin Bacon

  FBI Agent Charles McGuire

• 

  Benedict Cumberbatch

  Billy Bulger

• 

  Peter Sarsgaard

  Brian Halloran

• 

  Juno Temple

  Deborah Hussey

• 

  Jesse Plemons

  Kevin Weeks

• 

  David Harbour

  John Morris

• 

  Adam Scott

  FBI Agent Robert Fitzpatrick

• 

  Corey Stoll

  Fred Wyshak

• 

  Bill Camp

  John Callahan

• Mark Mahoney

  Mickey Maloney

• 

  Brad Carter

  John McIntyre

• 

  Scott G. Anderson

  Tommy King

• 

  Lonnie Farmer

  DEA Agent Eric Olsen (Interrogator)

• Mary Klug

  Mom Bulger

• 

  Erica McDermott

  Mary Bulger

• Luke Ryan

  Douglas Cyr

• 

  Owen Burke

  Buddy Leonard

• 

  Lewis D. Wheeler

  Jeremiah O'Sullivan

• Billy Meleady

  Joe Cahill

• 

  Jamie Donnelly

  Mrs. Cody

• 

  David De Beck

  Roger Wheeler

• 

  Gary Galone

  State Captain

• 

  Rory Cochrane

  Stephen Flemmi

• 

  James Russo

  Agent Scott Gariola

• 

  Jeremy Strong

  Josh Bond

• 

  Danae Nason

  McGuire's Secretary

• Bretton Manley

  Young Boy

• Berglind Jonsdottir

  Anna Bjornsdottir

• David Conley

  Officer Flynn

• Ciaran Crawford

  Irish Nationalist

• 

  Thomas Philip O'Neill

  FBI Wire Tech

• Joey Vacchio

  Joey, Big Italian

• Bill Haims

  Gennaro Angiulo

• 

  Anthony Molinari

  Charlie McTiernan

• 

  Declan Mulvey

  Charlie's Friend

• 

  Bates Wilder

  Agent James

• Marc Carver

  Dick Lehr

• Richard Donelly

  Gerard O'Neill

• 

  Brian A. White

  Prisoner

• Peter Morse

  FBI Agent

• 

  Tom Kemp

  Father Mackey

• 

  Patrick M. Walsh

  Michael Donahue

• 

  Naheem Garcia

  DEA Agent

• Kathryn A. Beauchamp

  Nurse

• Stephen Curran

  Drug Dealer

• Darin X.L. MacEachern

  Drug Dealer

• 

  Cary 'Big Shug' Guy

  Drug Dealer

• Sean Malone

  Crook

• 

  Jack Neary

  Barman

• Jimmy Joe Maher

  Boot Shop Owner

• Forry Buckingham

  World Jai Alai Chairman

• Danny DeMiller

  Porthole Bartender

• Michael F. Murphy

  Porthole Customer

• Alexander Cook

  DEA Agent Dan Doherty

• Ava Cooper

  Little Mary Bulger

• Stella Cooper

  Kathleen Bulger

• 

  Arthur Hiou

  Driver

• Todd Ryan Jones

  Charlie's Friend

• Julie Ann Dawson

  Floor Dancer (uncredited)

• Fergaledgar

  Trevor Williams (uncredited)

• 

  Robert E. Walsh

  Sr. FBI Official (voice)

• 

  W. Earl Brown

  John Martorano

• 

  Jim Powers

  The Mayor

• 

  Jeff Kamps

  Walker

• 

  Susan Garfield

  Press Photographer

• 

  Colleen Kelly

  Marion Hussey (uncredited)