Paola, a young reporter working for a tabloid newspaper, investigates a series of mysterious murders involving suspicious companies, cryptic messages and grotesque methods. When a witness comes forward with new clues, Paola goes after the case, not realizing that she has become the killer's latest obsession.
In the summer of 1979, gay porn producer Anne sets out to film her most ambitious film yet, but her actors are picked off, one by one, by a mysterious killer.
Claudio walks around the city without realizing that he is being followed.
A masked serial killer with psychosexual issues strangles female coeds with scarves before dismembering them. When a wealthy student identifies one of the scarves and thinks she has a lead on a suspect, she becomes the killer's next target, retreating to her family's remote cliffside villa with three of her girlfriends.
A detective gets hired to go mediate with an alien that has taken refuge at a hotel in northen Italy.
A recent widow has invited a group of family friends to her large and secluded country home. However, what the guests don't know is that the reason they've been assembled is that their host suspects one of them might be her husband's killer and she's intent on uncovering the identity of his murderer. As the guests begin to suspect each other, revealing long-kept and sinister secrets in the process, an unknown, black-gloved killer begins bumping them off in a variety of nasty ways.
Wealthy businessman Giorgio Mainardi has died of a stomach hemorrhage, but his ghost is not so sure that it was a random misfortune and wants to know the truth. Unfortunately, almost everyone around him is happy to see him gone. Everyone, that is, except for his daughter Rosy, who still feels affection for her father even though they have drifted apart. With her medical student boyfriend, Johnathan, Rosy will try to get to the bottom of her father's death.
A psychic finds herself tapping into the "energy" of a deceased phone operator. She also finds that her friends soon begin dying mysteriously. An investigator determines to track down the cause.
Three sisters - voluptuous Vida, Maria (nicknamed "Sissy"), and Ludmilla - live together in a run-down apartment building in Budapest. The sisters all vie for the attentions of Yuri Petkov, a dubious middle-aged pimp who plays them off against each other. One evening, Ludmilla claims to have found Yuri's body stuffed into their washing machine, but when Inspector Stacev arrives to investigate the body has disappeared. The good-looking young inspector attempts to discover the truth but in doing so becomes drawn into the sisters' bizarre sex games...
When socialite and heiress Julie Wardh begins receiving blackmail letters attributed to a mysterious serial killer, she suspects her cruel and sadistic former lover Jean is behind them. With her husband Neil frequently out of town, she falls into the arms of her friend's cousin George, and as the unknown assassin begins to make his move, she fears that one of the three men in her life may be the killer.
Roberto, a drummer in a rock band, keeps receiving weird phone calls and being followed by a mysterious man. One night he manages to catch up with his persecutor and tries to get him to talk but in the ensuing struggle he accidentally stabs him. He runs away, but he understands his troubles have just begun when the following day he receives an envelope with photos of him killing the man. Someone is killing all his friends and trying to frame him for the murders.
After a relaxing anniversary cruise, Andrea and his wife Barbara are dropped off in Istanbul, Turkey. There, they meet Andrea’s reserved assistant Silvia and his Turkish colleague Omar, who hasn’t been back to his home country in fifteen years. Andrea’s secretary has arranged a luxurious seafront villa for them to stay in while they’re in the country. Upon arriving at the villa, Omar experiences an unsettling feeling of déjà vu, as though he has been in the house before, while the married couple can’t stop bickering. However, the vacation soon turns into a nightmare when mysterious and deadly events begin to unfold.
A beautiful young woman sets her sights on an aging millionaire. She seduces him, and moves into his mansion with him. She soon tires of him, though, and after she gets rid of him, she goes after his son.
A San Francisco doctor encounters a prostitute who bears a striking resemblance to his late wife.
An American writer living in Rome witnesses an attempted murder that is connected to an ongoing killing spree in the city and conducts his own investigation, despite him and his girlfriend being targeted by the killer.
A one-time (and now one-handed) master film editor toiling in the cinematic sweatshops of 1970s Italy becomes the prime suspect in a series of brutal murders.
A man in a trench coat and hat kills women due to his perversive thirsty
Luciano Persichetti is hypersensitive and convinced that he has paranormal powers. Susanna, a parapsychology student with whom he is in love, tries to help him interpret the paranormal warning messages he is receiving. When Luciano turns out to be haunted by a mysterious killer who calls himself "The Guardian Angel", Susanna discovers that Luciano's paranormal powers are not real at all.
A maniac on the loose is committing savage acts of slaughter, and one survivor may be the only key to unmasking the serial slayer known as the Half-Moon Killer. The mysterious half-moon lockets he leaves with his victims could be the only key to unraveling his sinister motives, but will that be enough before he completes his ice-cold plot to claim his intended seven victims?
After several Catholic school pupils are murdered, a teacher who is having an affair with one of his students becomes a suspect. When other gruesome murders start occurring shortly thereafter, the teacher suspects that he may be the cause of them.