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Having casually overheard a confusing phone conversation between two women, Alberto manages to get in touch with one of the callers, Claudia, a painter. The two become lovers and things are spiced up by Claudia's ambiguous sexual nature and by the presence of her former lover, Pietro. Alberto discovers a pistol in Claudia's handbag and this leads to a further revelation: she's dominated by her stepmother Greta, who forced her into a clandestine lesbian relationship; of which Claudia is ashamed and wants to end - at all costs. Alberto, now a slave to love, runs Greta over. But Claudia denies urging him to murder...

Model Starlet, leads a double life; at night, she becomes Sherry, a Times Square prostitute, in order to search for her brother's killer. He was a marine who had been involved in a game of hot potato with a live hand-grenade on a boat returning from Lebanon. The game had ended tragically when the grenade went off, killing three men and injuring six others, castrating one of them. Now someone is stalking New York and stabbing ex-marines to death, leaving fake hand-grenades between their legs after castrating them. Hard-boiled policeman Flanigan thinks Starlet is putting herself in too much danger, so he intentionally exposes her double identity, then poses as her to catch the real killer.

Marco, a television journalist, reads "red lies" on his teletext system in order to gather material on the homosexual world for a story he's working on. Unfortunately, he is implicated in a series of murders in which the victims are all gay. Marco becomes a suspect and is forced to investigate the crimes himself in order to prove his innocence.

When Chiara, a violinist at the conservatory, is brutally murdered after a performance, inspector Maccari is put on the case. Maccari, whose own wife was once murdered by a serial killer, suspect professor Baraldi, the director of the conservatory. But as more fall prey to the killer, Maccari comes to a shocking conclusion...

A man has been killed on the Dover/Boulogne car ferry. What is the connection between him and the attempts being made to kill Jane Kerrell, a young girl in her early twenties? As she speeds through the French countryside to the South of France, several attempts are made on her life as she is deliberately forced off the road by another car. But when she reports these attempts, the local Cap Ferrat Police Inspector and the sinister psychiatrist, Dr. Forla believe these attempts are in her imagination and Dr Forla, concludes that Jane is mentally disturbed. At her wits end Jane finds an ally in the young English painter, Paul Hedley who finally believes her life is in danger following an attempt to murder him. When Inspector Malling of Scotland Yard and Mr. Breese arrive in Cap Ferrat trying to uncover the connection between Jane and the murdered man on the ferry, this thrilling puzzle of international intrigue begins to unravel against the backdrop of the French Riviera.

The Great Dante, a prestigious magician, accidentally dies during a risky magic trick. Thirty-five years later, his son Lorenzo, also a magician, presents a show at one of the city's most important theaters. From this point on, a series of murders will begin to occur that someone tries to pin on him. Lorenzo will have to find out who it is and why this person wants to implicate him

A homicidal maniac known as the 'tail', dressed in a clown mask, raping and killing a number of girls who work in erotic phone lines. The case has been assigned two policewomen, Lorraine and Consuelo, who begins to investigate, by phone sex, where they are to interview the victim's friends. After the second telecommunications operator, is murdered, his mind and Consuelo & Lorraine to take a job at the hot line.

A rich man gathers together friends and relatives at the abandoned theatre he owns, but the party isn't fun for long since apparently one of them is a murderer.

A rich count invites a theatre troupe to his home on an isolated island... but soon people start getting murdered. Has the family curse struck again?

In Dublin, the acid-scarred, razor-slashed corpse of a young woman is discovered in the boot of the Swiss Ambassador's limousine. The Ambassador, his family and employees all become immediate suspects. Faced with the problem of diplomatic immunity, the police officer in charge of the case brings in John Norton, an ex-Inspector known for his brutal methods, to carry out an "unoffical" investigation. While Norton develops a relationship with the Ambassdor's attractive daughter, several more gruesome murders occur...

A low rank journalist at Tribuna Sera newspaper receives a letter one day. His correspondence contains a serial killer's letters, which he exploits.

Mr. Rorret is the owner of a cinema called "The Peeping Tom" which shows a constant stream of horror films. Rorret dates women from the audience and then kills them, taking sadistic pleasure from their expressions of terror. This film is apparently a well-filmed homage to "Peeping Tom", with nods to "Psycho" and "Strangers on a Train".

An insatiable nymphomaniac with a wheelchair-bound writer husband finds that her lurid exploits rejuvenate his creativity and libido, but soon enough, all of her lovers end up being murdered by an unknown assailant.

Detective Baldassarre spends his forced exile sorting criminal records. He gets a chance to return to the line of fire when two people, an aristocrat and a worker are struck by lightning inside a fancy mansion. The incident would be relegated to freak accidents, but Baldassare's attention is drawn to the strangeness of the events and he begins to investigate.

Nine members of an extremely rich and hateful family have decided to have a reunion on a remote island in the Mediterranean. No sooner than their arrival, old grudges, resentments, and feuds make themselves known, along with allusions to some more macabre events in their past. But when their boats are sabotaged, thus stranding them without any connection to the mainland, it becomes clear that someone is not willing to let old wounds heal, a fact made all the more clear as bodies start to pile up...

After a phone call has been intercepted (an industrialist is going to receive a huge amount of money from a foreign bank), Mafioso Luca Albanese is assigned to set up a big robbery. He and his gang (three men and three women) then hide-out in a remote mountainous region, but soon at each other's throats. Moreover, someone is killing Albanese's men one by one, leaving white paint on the victim's faces...

Smeralda Amadier, a retired singer, lives in an isolated villa with her secretary Marcella and her lover Didier (but throws out the latter after catching him with another woman). Smeralda has huge debts and when creditors threaten her with bankruptcy she decides to sell her valuable jewels. That evening, she meets Costas, a handsome young man who seduces her. Next morning, there is no sign of him or the jewels. He was apparently a penniless gigolo, but who was his secret partner in the theft?

An Italian reporter is travelling on the Instabul-Athens train. A woman is murdered with the reporter's letter-opener so that makes him the main suspect. With the help of his Swedish girlfriend he starts investigating in order to prove his innocence.

Professor Ricardo Rossi is an uncompromising moralist and a paladin of Catholic morals. He is understandably baffled when he finds his wife Elisa in bed with another woman (whom Rossi mistakens for a man). Furious, he poisons his wife and throws her body into a lake, then brings home a prostitute, Eva, to replace her. He also begins an affair with his niece Barbara. But Elisa is not dead, as Rossi soon finds and she is plotting with Eva to get rid of him. Rossi is more precise this time and shoots the two women dead. However, there is a complication and more deaths ensue...

During an outbreak of violent murders in the area targeting young women, a journalist searching for a female friend gone missing ends up in a villa owned by an eccentric photographer.