Alexandre Aja Director, Producer Jamie Dornan Dr. Allan Pascal Actor Sarah Gadon Natalie Drax Actor Aiden Longworth Louis Drax Actor Aaron Paul Peter Drax Actor Oliver Platt Dr. Perez Actor Molly Parker Dalton Actor Barbara Hershey Violet Drax Actor Julian Wadham Dr. Janek Actor Jane McGregor Sophie Actor Max Minghella Screenwriter, Producer Shawn Williamson Producer Tim Bricknell Producer Zanne Devine Executive Producer Rosanne Korenberg Executive Producer Maxime Alexandre Cinematographer Baxter Film Editing Patrick Watson Original Music Rachel O'Toole Production Design Nigel Evans Art Director Kate Marshall Set Decoration Carla Hetland Costume Design Maureen Webb Casting Colleen Bolton Casting