Rosemary's Baby is a 1968 American psychological horror film written and directed by Roman Polanski, and starring Mia Farrow, John Cassavetes, Ruth Gordon, Sidney Blackmer, Maurice Evans, Ralph Bellamy, Angela Dorian, Clay Tanner, and, in his feature film debut, Charles Grodin. The film follows a young, pregnant wife in Manhattan who comes to suspect that her elderly neighbors are members of a Satanic cult, and are grooming her in order to use her baby for their rituals. It is based on the 1967 novel of the same name by Ira Levin.