A young Robert Wise (Star Trek: The Motion Picture, The Sound of Music) directs this on-location mystery noir shot in Mexico City and Cuernavaca. When a diamond necklace goes missing in Mexico, so too does the insurance investigator tasked with its retrieval. A second investigator, Steve Hasting (William Lundigan), is summarily dispatched down south to retrieve jewel and agent both. Hasting sets his sights on the missing agent's sister,
