Jake Gyllenhaal

Robert Graysmith

Robert Downey Jr.

Paul Avery

Mark Ruffalo

Inspector David Toschi

Anthony Edwards

Bill Armstrong

Brian Cox

Melvin Belli

John Carroll Lynch

Arthur Leigh Allen

David Fincher

Director

James Vanderbilt

Screenplay

Bradley J. Fischer

Producer

Mike Medavoy

Producer

James Vanderbilt

Producer

David Shire

Music Director

Harris Savides

Cinematographer