When Spike Tracy, man of leisure and occasional amateur sleuth, seeks roadside assistance from an attractive young woman named Jill, he readily accepts her invitation to stay to tea with her family while his car is being fixed. So it is that he finds himself in the house of Jill's guardian, Dr. Sigurd Sharon, which they share with Jill's twin sister Mary. Of particular interest to Spike is Jill's insistance that she is in immanent danger of being murdered. But when tragedy does strike, it ...