After Edward's wealthy wife, Jessica, dies in a mysterious fire, he marries Francene, the governess of his daughter Susan. Francene is interested in one thing: money. Wasting no time in spending Edward's inheritance, she turns her attention to Susan: if Susan and Edward were both to die, the money would pass to Anthony, Edward's cousin and Francene's former lover. Francene and Anthony work out a plot and decide to drive Susan mad...