 Because of the film's plot involving disturbing scenes, DiCaprio had nightmares of mass murder during production.The film was released to mixed reviews; Peter Bradshaw of "The Guardian" praised the direction and performances but criticized its "silly twist ending", calling it "supremely exasperating".Peter Travers called it DiCaprio's "most haunting and emotionally complex performance yet", and particularly liked his cave scene with costar Patricia Clarkson.