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