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 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.

An elderly heiress is killed by her husband who wants control of her fortunes. What ensues is an all-out murder spree as relatives and friends attempt to reduce the inheritance playing field, complicated by some teenagers who decide to camp out in a dilapidated building on the estate.

Events take a sinister turn one night in London, when two very different couples arrive at a double-booked apartment. Actions have consequences and not all debts are paid for with money. Leaving, it's harder than you think.

A man looking to buy a snake gets far more than he bargained for as he is drawn into a mysterious woman's home of exotic reptiles.

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 he and his girlfriend being targeted by the killer.

A tourist witnesses a murder and finds herself caught up in a series of bloody killings.

Three tales of supernatural horror include a woman plagued by threatening phone calls, a family targeted by vampiric monsters, and a deceased medium who wreaks havoc upon the living.

Isabella, a young model, is murdered by a mysterious masked figure at a fashion house in Rome. When her diary, which details the house employees' many vices, disappears, the masked killer begins killing off all the models in and around the house to find it.

A woman is strangled in the bath by a black-gloved killer who disposes of her body in a large trunk. The trunk is delivered to St. Hilda College, an exclusive finishing school. Betty-Anne, one of the female students, is strangled in the school cellar. The police, led by Inspector Durand, are called in to investigate. Suspects include La Floret, the voyeuristic gardener; Di Brazzi, the new swimming instructor; Mrs. Clay, the summer school French mistress; an old professor who collects birds; and a philandering young teacher called Richard. The murders continue but Jill, a keen amateur detective, helps the police identify the unlikely killer...

A kid from the country gets lost in the big city looking for love, going on a series of increasingly bizarre dates while a serial killer is on the loose targeting boys his age.

Michael is a successful actor, but he has a scandal in his past: at a tender age he knifed his father to death. He and his girlfriend Deborah go to his mother's for the weekend, and are joined by the director and others from a recent film project, who are given a rather cool reception by the superstitious housekeeper Oliver. Soon rude things begin happening to some of the guests, and Michael fears a repeat of his nightmare past is in progress.

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.

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.

There are a number of inheritors to a fortune who are getting killed by a mysterious somebody whom we do not see. Each death is novel, but not terribly graphic. Who did it?

A photographer's model is found murdered, sparking a police investigation that targets her ex-boyfriend. As more models die and murder videos surface, the true identity of the killer becomes uncertain.

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.

Anne is convinced she has found her husband's corpse, but Dr. Mark can only find out that the man has gone home. When he comes back, his wife does not trust Mark, who believes she suffers from schizophrenia.

Claudio walks around the city without realizing that he is being followed.