Robert Mitchum and Jean Simmons star in this film noir thriller about a man trapped in the web of an alluring, deadly, remorseless woman who will stop at nothing to get what she wants and who conceals the evil within behind her beautiful Angel Face. Heiress Diane Tremayne (Simmons) arranges for an ambulance driver to whom she's attracted, Frank Jessup (Mitchum), to be hired as her family's chauffeur. And Diane lures Frank away from his girlfriend even as she becomes increasingly jealous of her stepmother. When Diane's parents die in an automobile accident-and the police find evidence of tampering to the car-Diane and Frank are arrested as prime suspects. After Diane convinces Frank to marry her in jail, the two are both acquitted of murder. Now, as Diane realizes that she may have been able to seduce Frank but cannot make him truly love her, she decides she would rather kill again than lose him