The Three Faces of Eve (1957)
The Three Faces of Eve is a 1957 American film adaptation based on a book by psychiatrists Corbett H. Thigpen and Hervey M. Cleckley, who also helped write the screenplay. It was based on their case of Chris Costner Sizemore, also known as Eve White, a woman they suggested might suffer from dissociative identity disorder. Sizemore's identity was concealed in interviews and this film, and was not revealed to the public until 1975. Joanne Woodward won the Academy Award for Best Actress, making her the first actress to win an Oscar for portraying three different personalities. The Three Faces of Eve also became the first film to win the Best Actress award without getting nominated in another category since Bette Davis won for Dangerous in 1935, and the last for nearly 31 years until Jodie Foster won the award for The Accused, the film's sole nomination.