He is the worst of the worst; a perverted deviant and an elusive killer who presents himself as an old-fashioned country preacher. She is the distraught widow of a man who successfully embezzled a fortune. With her two young children, she lives amid the dilapidated ruins of a declining estate named Slate Gardens, where rumor insists three million dollars remains hidden.
Beguiled by the preacher's psychotic manipulations, the widow takes him into her home as her second husband and a malign father to her vulnerable son and daughter. She longs for companionship and love. He craves only profit.