Noir-like crime drama directed by Fritz Lang. Norah (Anne Baxter) is a pretty young telephone operator engaged to a soldier overseas. On her birthday, she receives a from him to say that the relationship has ended. Feeling despondent, she agrees to a date with Harry Prebble (Raymond Burr), a smooth-talking colleague from her office. He gets her drunk and takes her back to his apartment, where she resists his advances and ends up bludgeoning him in self-defence. She flees - leaving behind a blue gardenia he gave her. The next morning, she can't remember the details of what happened. All she knows is she has become implicated in Prebble's murder... Nat King Cole makes an appearance as a nightclub singer.