The Mysterious Mr. Valentine (1946)

Janet Spencer (Linda Stirling) has a blow-out and walks into the Armstrong Chemical Company to ask John Armstrong (Tristram Coffin for help, thus arousing the jealousy of his wife Rita (Barbara Wooddell. Her own car now missing, Janet drives away in Rita's car and almost collides with a second car. When she stops she is accused of hitting and killing a man--Ralph Doane, Armstrong's senior partner. Two men offer to take Doane's body to a hospital. Janet meets Steve Morgan (William Henry), a private detective who offers to help her. Steve goes to Sam Priestly (Kenne Duncan), the insurance man for the Doane-Armstrong company. He informs Steve the money has already been pair to Armstrong and throws him out. He visits Rita, who offers him cash if he can find her husband's girlfriend, and he trails Armstrong to the apartment of Lola Carson (Virginia Christine) and later learns that Rita has been arrested for the murder of her husband. At night, Steve and Janet drive to the Doane-Armstrong plant and find the solutions to the various mysteries.