So when she starts behaving mysteriously her father hires private investigator Storm Kennedy to follow her. The night Kennedy tracks Hilary to a party at Hangover House, the body of a man is discovered stabbed in the chest with a jewelled dagger. When a woman's handkerchief is found at the scene of the crime, Hilary identifies it as hers, but Kennedy is the prime suspect. Then a ghostly figure appears, pointing an accusing finger...