Young Linda Channing visits her fiancé Ian Faulkner at an old aristocratic residence near London. Here he witnesses several mysterious murders. There are no clues to these murders - only bloody corpses and the terrifying sound that always comes shortly before the murders. Inspector Mark Santini embarks on the investigation and slowly unfolds a story full of old wrongs and terrifying revelations...

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.