Michael Mann Director Johnny Depp John Dillinger Actor Christian Bale Melvin Purvis Actor Marion Cotillard Billie Frechette Actor Billy Crudup J. Edgar Hoover Actor Stephen Dorff Homer Van Meter Actor Stephen Lang Charles Winstead Actor Channing Tatum "Pretty Boy" Floyd Actor Stephen Graham Baby Face Nelson Actor Giovanni Ribisi Alvin Karpis Actor Jason Clarke "Red" Hamilton Actor David Wenham Harry "Pete" Pierpont Actor Emilie de Ravin Barbara Patzke Actor Lili Taylor Sheriff Lillian Holley Actor James Russo Walter Dietrich Actor Rory Cochrane Agent Baum Actor Branka Katić Anna Sage Actor Peter DeFaria Grover Weyland Actor Ronan Bennett Screenwriter Ann Biderman Screenwriter Kevin Misher Producer G. Mac Brown Executive Producer Elliot Goldenthal Original Music Dante Spinotti Cinematographer Nathan Crowley Production Design Paul Rubell Film Editing Colleen Atwood Costume Design Patrick Lumb Supervising Art Direction William Ladd Skinner Art Director Rosemary Brandenburg Set Decoration Avy Kaufman Casting Bonnie Timmermann Casting