While Christopher Nolan explores the metaphysical in Inception, M. Night Shyamalan focuses on the supernatural in his thriller, Split. Kevin Wendell Crumb (James McAvoy) is a man who suffers from dissociative identity disorder (DID) and lives with 23 personalities. He tries to keep these personalities suppressed with the help of his psychiatrist Dr. Karen Fletcher (Betty Buckley), but some of his alternate personalities cause chaos and distress, and lead him to abduct three teenage girls. The film centres around Kevin's struggle to contain his personalities while preventing the emergence of a 24th personality, called "The Beast," as the girls attempt to escape from his wrath.