 To protect his sister, Helen Reed (Constance Ford), Robert Crane (Denver Pyle) threatens his brother-in-law, David Reed (Carleton G. Young), with bodily harm. Helen suffers from continuing nightmares that involve memories she cannot explain, and is mysteriously connected to a promiscuous woman named Joyce Martel, who is having an affair with Johnny Hale (Murray Hamilton). When David Reed is murdered, Crane is charged with the crime. It is up to Perry Mason (Raymond Burr) and Dr. Maitland (Abraham Sofaer) to unravel the mystery.