Sam Taylor-Johnson Director, Screenwriter Aaron Taylor-Johnson James Frey Actor, Screenwriter Charlie Hunnam Bob Frey Jr. Actor Billy Bob Thornton Leonard Actor David Dastmalchian Roy Actor Odessa Young Lilly Actor Andy Buckley Dr. Stevens Actor Tom Amandes Dr. Baker Actor Dominic Pace Cecil Actor Lynne Oropeza Psychiatric Nurse Actor Keith Barber Old White Man Actor Pamela Abdy Producer Alex Heineman Producer Andrew Rona Producer Dara Weintraub Producer, Executive Producer Todd Cohen Executive Producer James Frey Executive Producer David Krintzman Executive Producer Monte Lipman Executive Producer Dana Sano Executive Producer Jeff Cronenweth Cinematographer Martin Pensa Film Editing Atticus Ross Original Music Leopold Ross Original Music Claudia Sarne Original Music David J. Bomba Production Design Mary Claire Hannan Costume Design