Psychological thriller from master of suspense Alfred Hitchcock. Psychiatrist Dr Constance Peterson (Ingrid Bergman) is intrigued by the arrival of her new boss, Dr Edwardes (Gregory Peck). Edwardes seems to be suffering from amnesia, and when he faints it transpires that he is in fact an imposter, and may be guilty of murdering the real Dr Edwardes. Constance sets about probing the imposter's psyche in an attempt to discover the truth. Features a famous dream sequence designed by Salvador Dali.