 Duke Duquesne (Cesar Romero), a very eccentric magician, accidentally beheads his young wife Melinda (Connie Stevens) with a prop guillotine during a stage performance. Their two-year-old daughter is sent away for twenty years to live with an aunt. News of her father s death brings Cassie Duquesne (also played by Stevens) back to Los Angeles to attend his funeral. The following day, she is told he left a rather odd will. She will inherit her father s estate on the condition that she stay in his creepy palatial mansion for seven nights in a row--alone.