After spending twenty years in a psychiatric hospital for the axe-murder of her cheating husband, Lucy Harbin (Joan Crawford) is anxious about re-entering society.
When unmarried, down-on-her-luck Edith (Bette Davis) discovers her identical twin sister Maggie (also Bette Davis) has enjoyed a life of luxury with the man Edith used to love, Edith kills Maggie and takes her place. After committing the act, Edith struggles to keep her true identity a secret.
Directed by Paul Henreid
Screenplay by Oscar Millard and Albert Beich (based on the story La Otra by Rian James)
Produced by William H. Wright
Released by Warner Bros. Pictures