Robert Hossein (Boris Volkoff)Romina Mondello (Sonia Lafont)Riccardo Serventi Longhi (Andrea Conversi)Gabriella Giorgelli (Aunt Francesca)Umberto Balli (Alex)Valery Valmond (Giorgina)Gianni Franco (Inspector Palazzi)Antonello Murru (Museum Caretaker)Daniel Auber (Luca)Romano Iannelli (Pathologist)Rosa Pianeta (Anna's Mother)Sonia Topazio (Nurse)Massimo Vanni (Victor)Aldo Massasso (Inspector Lanvin)Sabrina Pellegrino (Elena)Giuseppina Lo Vetro (Madama)Luca Memé (Brothel Patron)Goffredo Unger (Puppeteer)
In 1900 Paris, a couple are horribly murdered by a masked man whose metal claw rips out their hearts. The sole survivor and witness to the massacre is a young girl. 12 years later in Rome, a new wax museum opens; its main attractions are lifelike recreations of gruesome murder scenes. A young man bets that he can spend the whole night in the museum, but the next morning he's found dead. Soon, people start disappearing from the streets of Rome and the wax-museum halls begin filling with new figures.