Your Vice Is a Locked Room and Only I Have the Key

“Unlock the Secrets of Your Darkest Desires!”

Women are being murdered in grisly fashion near a grand country manor, and the suspicion keeps landing on the man who lives in it. Oliviero Rouvigny (Luigi Pistilli) is a drunk, burned-out writer who fills the house with orgies and mocks his wife, Irina (Anita Strindberg), in front of the guests. Sergio Martino brings in a beautiful niece, Floriana (Edwige Fenech), and her arrival changes what the couple have left between them.