Tenebre (1982)

An American college student in Rome and his sister in New York investigate a series of killings in both locations where their resident addresses are the domain of two covens of witches.

A young girl, with an amazing ability to communicate with insects, is transferred to an exclusive Swiss boarding school, where her unusual capability might help solve a string of murders.

After witnessing the murder of a famous psychic, a musician teams up with a feisty reporter to find the killer while evading attempts on their lives by the unseen assailant bent on keeping a dark secret buried.

A young opperata is stalked by a deranged fan bent on killing the people associated with her to claim her for himself.

A witness of an attack, a writer becomes stalked by a serial killer.

A newcomer to a fancy ballet academy gradually comes to realize that the school is a front for something far more sinister and supernatural amidst a series of grisly murders.

A newspaper reporter and a retired, blind journalist try to solve a series of killings connected to a pharmaceutical company's experimental, top-secret research projects and in so doing, both become targets of the killer.

A musician is stalked by an unknown killer who's blackmailing him for an accidential killing of another stalker. But is everything what it appears to be?

A young man tries to help a teenage European girl whom escaped from a clinic hospital after witnessing the murder of her parents by a serial killer and they try to find the killer before the killer finds them.

An elderly and retired police detective and a young amateur sleuth team up to find a serial killer whom has resumed a killing spree in Turin, Italy after a 17-year hiatus.

A young policewoman slowly goes insane while tracking down an elusive serial rapist/killer through Italy when she herself becomes a victim of the brutal man's obsession.

Part three of the "Three Mothers" trilogy which takes place in Rome and has to do with Mater Lachrymarum (The Third Mother).