Johnny Williams (Drake) is a psychotic serial killer who returns to his hometown to visit his mother (Hutchinson) and widowed sister-in-law Helen (Miller), both of whom are ignorant of his criminal past. Johnny hopes to settle down and start life anew, but Helen, her suspicions aroused by visiting detective Mike Randall (Taylor), discovers the truth about her beloved brother-in-law. Failing to talk Helen out of turning him in, Johnny methodically plots her murder. When all his plans fail he drags Helen into his car and drives off with her. Knowing Johnny is going to kill her, Helen grabs the keys, and he is forced to swerve to avoid hitting a boy riding a bike, and is killed in the resulting accident. At the memorial service, as Johnny is lauded as a model citizen, only Helen and Mike know the truth.
