One of Cyrus Norman's six relatives, Joyce and Wally Campbell, will hear his will read out 10 years after his death. Norman's lawyer, Crosby, set up a meeting for the six of them at Norman's eerie New Orleans Gothic mansion. Someone will die by midnight, the housekeeper claims. As soon as Joyce is named the sole inheritor, Wally is worried for her. All of them are shocked when Crosby is found dead.