The Locket is a 1946 American psychological thriller film noir directed by John Brahm, starring Laraine Day, Brian Aherne, Robert Mitchum, and Gene Raymond, and released by RKO Pictures.

He recounts in a series of nested flashbacks a tale of how Willis’ fiancé and Blair's ex-wife, Nancy, is not only a kleptomaniac, inveterate liar, and murderess but is also unpunished for any of her crimes.

When, five years into their marriage, he finally is faced with the truth of her serial thefts and compulsive deceits she has him fraudulently committed to a mental institution.

In spite of Blair's passion in recounting the details of the previous decade, an increasingly unsteady Willis remains determined to see the wedding through.

Dressed in her gown and veil, Nancy is gifted a family keepsake passed down over three generations of Willis women - the same heart-shaped golden locket that had once been her childhood downfall, now affectionately clasped around her neck by the very same woman who had tormented her.

The writing by Sheridan Gibney displays an understanding of the subject matter and proves a solid basis for the able performances achieved by John Brahm’s direction.

Latter gears his scenes for full interest and carefully carries forward the doubt – and audience hope – that Nancy is not the villainess.