David Fincher Director Michael Fassbender The Killer Actor Charles Parnell The Lawyer - Hodges Actor Arliss Howard The Client - Claybourne Actor Tilda Swinton The Expert Actor Kerry O'Malley Dolores Actor Monique Ganderton The Dominatrix Actor Lacey Dover The Maid Actor Sala Baker The Brute Actor Sophie Charlotte Magdala Actor Andrew Kevin Walker Screenwriter Ceán Chaffin Producer Erik Messerschmidt Cinematographer, Cinematographer Chris Cleek Art Director Pamela Delgado Art Director Matthew Gatlin Art Director Elvis Mariñez Art Director Brandi Kalish Set Decoration Cate Adams Costume Design Valerie Daniella Hernandez Oloffson Casting Laray Mayfield Casting Trent Reznor Original Music Atticus Ross Original Music