The Las Vegas Story is a 1952 suspense film noir starring Jane Russell and Victor Mature, directed by Robert Stevenson and produced by Robert Sparks and Howard Hughes with Samuel Bischoff as the executive producer.
Linda reluctantly returns to Las Vegas by train when her husband Lloyd Vincent Price insists on vacationing there. Fellow passenger Tom Hubler Brad Dexter hurriedly gets off as well when the Rollins do. Linda discovers that her husband is in some kind of financial trouble, possibly criminal as well, and suspects he is trying to raise money by gambling. The first night, Lloyd insists she wear her necklace, appraised at 150,000, when they go out. She encounters Dave, now a lieutenant with the Sheriffs Department, who is initially none too pleased to see her again.The next day, Hubler tries to become friendly with Linda at the hotel pool, but she brushes him off. He later informs Lloyd that he has been assigned by his insurance company to watch him and the necklace. ........
Source: Wikipedia