How much do you want to believe?
Psychologist Dr Margaret Matheson (Sigourney Weaver) and her protégé physicist Tom Buckley (Cillian Murphy) debunk fake psychics and purveyors of fake ESP, poltergeist phenomena and the like. When renowned blind psychic Simon Silver comes out of retirement for a major high profile (and money spinning) series of theatrical events, Buckley wants to go for him, but Margaret is not so keen.