Lost Souls is a horror film directed by Janusz Kaminski and produced by Meg Ryan. The film stars Winona Ryder as Maya Larkin and Ben Chaplin as Peter Kelson. The film was shot in Los Angeles and New York City. It based on a group of Roman Catholics that is being led by an ailing priest believing that Satan has intentions of transforming into man. This group believes that Peter Kelson is the host body, in which Satan will take over. Maya Larkin is a teacher that attempts to get Peter, who is also a writer, to believe that he is the target. By convincing someone without faith of a satanic take over, they will defeat the prophecy of Satan appearing in human form.