The Locket is a 1946 American psychological thriller with noirish undertones directed by John Brahm, starring Laraine Day, Brian Aherne, Robert Mitchum, and Gene Raymond, and released by RKO Pictures. The film is based on a screenplay by Sheridan Gibney, adapted from "What Nancy Wanted" by Norma Barzman, wife of later-blacklisted writer Ben Barzman. It is noted for its complex and confusing use of layered flashbacks within flashbacks to give psychological depth to the narrative.