Hector Doriani is a stage and screen actor who feels himself living in the shadow of his dead twin brother, Alex Doriani, once a famous star of horror movies. Alex’s young son, Adrian, now lives with Hector in an isolated mansion in the countryside. To keep alive the memory of his father, the boy imagines himself visited by the spirit of the dead man, incarnated in a series of classic horror characters from the past. Eric, Alex’s former butler, now also works for Hector. His main role is to locate and bring to the mansion a series of women who are paid large sums of money by Hector to take part in various sadistic sex games. To complicate matters even further, the games always seem to end with the women getting slaughtered in various gruesome ways by a black gloved, masked killer. Also on hand is horror diva Caroline Munro, as Hector’s housekeeper and cook, who is being pursued by a local priest with whom she once had a much-regretted affair.

A cabaret performer tries to protect her daughter from a mysterious killer while resisting the advances of the prosecutor pursuing the criminal.

An ancient curse causes the ancestor of a witch hunter to turn into a bloodthirsty werewolf.

After two bank robbers take hostages, one of them rapes the bank cashier and then tries raping Sylvia (Sylvia Kristel), the bank manager. The other robber is Ricardo, the bank president's son and brother of Julio, Sylvia's fiancé. Can Julio free his fiancé and the other hostages?

Chris Miller, living with her stepmother in a large secluded mansion, finds her isolation interrupted by the arrival of an unknown scythe-wielding killer.

It was clearly also influenced by American "Dirty Harry" movies and perhaps the cynical Italian police thrillers that were emerging at the time. Naschy, this time,plays a hard-boiled cop who slaps around elderly exhibitionists and makes a wounded biker with a broken leg crawl to the hospital. He is up against "the Dragonfly Killer", a vigilante who is offing pimps, prostitutes, and junkies--"cleaning up the city" much like the villains in the Dirty Harry sequel "Magnum Force" (although his motive for doing so would have made Harry Callahan crap his pants in utter disbelief). Erica Blanc plays Naschy's fashion designer wife who, after one of her gay friends is killed, decides to try to solve the case herself using her "woman's intuition". This leads to comical scenes of her sitting naked in bed pouring over grisly crime photos with a magnifying glass, or acting hysterically (albeit much more believably)when the killer sends the severed head of a Turkish pimp to their house.Of course, she stumbles across the identity of the killer before her husband does, leaving Naschy to rush to her rescue.