Stephen Gaghan Director, Writer Katie Holmes Katie Actor Benjamin Bratt Detective Wade Handler Actor Charlie Hunnam Embry Actor Zooey Deschanel Samantha Actor Gabrielle Union Amanda Actor Gabriel Mann Harrison Actor Mark Feuerstein Robert Hanson Actor Melanie Lynskey Mousy Julie Actor Will McCormack August Actor Philip Bosco Professor Jergensen Actor Tony Goldwyn Dr. David Schaffer Actor Fred Ward Lt. Bill Stayton Actor Lynda Obst Producer Roger Birnbaum Producer Edward Zwick Producer Gary Barber Producer Richard Vane Executive Producer Matthew Libatique Cinematographer Mark Warner Film Editing Clint Mansell Original Music Gideon Ponte Production Design Pierre Perrault Art Director Anne Galéa Set Decoration Suzanne Cloutier Set Decoration Louise Frogley Costume Design Juel Bestrop Casting Rosina Bucci Casting Kathleen Chopin Casting Jeanne McCarthy Casting