Eight strangers are invited by a mysterious unknown host to spend the night in a penthouse apartment. The eight are wined, dined, then greeted by their host via a radio broadcast. The voice announces that before the night is over each one will be murdered unless they manage to outwit their ninth guest Death.
A deformed criminal mastermind plans to loot the city of San Francisco as well as revenge himself on the doctor who mistakenly amputated his legs.
A woman begins to suspect that her brother is possessed by a voodoo spirit.
White magic practitioner Amos Wilder kills himself after securing his nephew's sworn promise to guard his body against evil spirits. The nephew must never leave his uncle's mansion, to protect the shire from the return of black necromancer Bentley, cast back to hell by Wilder.
