 While repositioning his car in the driveway, Bertrand Allred (Neil Hamilton) finds the unconscious Robert Fleetwood (Harry Townes), who wakes up with amnesia. It appears that Bertrand s step-daughter, Patricia (Yvonne Craig), struck Fleetwood as she was driving toward the house. Bertrand and his wife Lucille (Anna Lee) spirit Fleetwood away to a remote location. Then, Lucille s car is found wrecked with the dead Bertrand in it, and statements to the police and footprints in the mud confuse the situation. Only Perry Mason can unravel the tangled yarns.