Millionaire playboy Fredrick Loren hosts a party for his 4th wife Annabelle Loren at the "House On Haunted Hill," a house that has seen seven murders, Fredrick invites 5 guests: Lance Schroeder,a pilot, Ruth Bridges, a journalist, Watson Prichard, the owner of The House On Haunted Hill, Nora Manning, a worker for one of Fredrick Loren's companies, and David Trent, a psychiatrist. Fredrick will offer each of them $10,000 to spend a night in The House On Haunted Hill. They all want the money. At midnight, the caretakers lock to doors, and the terror begins!