Although this is built from some of the same characters in a previous title B Fatal Lady (1964) which left a lot to be desired, this is much better. It is an old-fashioned, comfortable, get-them-in-a-group-and-let-them-kill-each-other type. The scene is Grand Canyon and Las Vegas and, as you can see, the potential for homicide exists in: a much-married heiress, her much younger husband, two of her ex-es, her son and his Jealous cousin. Mr. Potter is the sleuth in love. Moonlight and murder for the girls.