Cesar Romero is a magician who accidentally kills his wife(Connie Stevens) while performing his famous guillotine trick. Fast forward to the present: His daughter(Connie Stevens again) who he has neglected out of grief, is informed that her father has died, and that his will stupulated that she must spend a period of time in his house in order to collect her inheritance. The house appears to be haunted, or at least rigged with horrible tricks by her dead father. It seems her father resented her resemblance to her dead mother.

Cassie Duquesne, daughter of magician "Duke" Duquesne, whose wife, Melinda, was accidentally beheaded during their act in 1944, returns to Los Angeles 20 years later to attend her father's funeral. She learns that his will stipulates that, in order to receive her inheritance, she must spend seven consecutive nights in his old mansion. Duquesne claimed that he would make his presence known to her on one of those nights. Reporter Val Henderson arrives and is allowed to stay at the old house with her until Cassie learns that he is planning a story on her vigil. That night, after Val has left, Duquesne appears, alive and insane, and attempts his guillotine routine on her. Val returns with the police, however, in time to save her.