The Fifth Cord (1971)

A private investigator helps a former flame solve the murder of her wealthy grandfather, who lived in a sprawling estate surrounded by his idiosyncratic family.

An English pianist living in Rome witnesses the brutal murder of his psychic neighbor. With the help of a tenacious young reporter, he tries to discover the killer using very unconventional methods. The two are soon drawn into a shocking web of dementia and violence.

After a car accident that caused the loss of her baby, Jane experiences an increasing amount of nightmares that shake her to her core. After seeking professional help, her haunting visions turn into an even more frightening reality, one full of black magic, blood orgies, and murder.

A woman with psychic powers has a vision of a murder that took place in a house owned by her husband.

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.

After witnessing a mysterious woman brutally slay a homemaker, prostitute Liz Blake finds herself trapped in a dangerous situation. While the police thinks she is the murderer, the real killer is intent on silencing her only witness.

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 routine investigation of a shocking murder takes a bizarre twist when the killer contacts the reporter and appoints him his personal spokesman. As the killer's calls and clues increase, the reporter is lured into a deadly trap.

A schoolgirl was murdered seven years ago, and the case was never solved; now, the murderer seems to be back.

An unidentified fifteen year-old girl is found hanged after an anonymous tip-off. The girl, Silvia Polvesi, is soon discovered to have been murdered. A peeping tom is caught with photos of her having sex with a teenage drop-out but he is later released due to lack of evidence. The investigation, conducted by Inspector Silvestri and the assistant public prosecutor Vittoria Stori, focuses on the girl's parents. Conspiracies and horrors pile up, as do the body parts.

Detectives Jake Doyle and Mary Kelly seek the help of an incarcerated serial killer named The Artist when a copycat killer strikes. While Mary searches for clues in The Artist's brilliant but twisted psyche, she and Jake are lured into a diabolical game of cat and mouse, racing against time to stay one step ahead of The Artist and his copycat.

A forensic psychologist must determine if a minor should be charged with murder.

A private investigator is forced into a dangerous alliance with a killer in order to uncover a quiet town’s grisly criminal underbelly and clear the name of her mentor, who is implicated in the crimes.

When a kidnapping victim turns up alive after fifteen years, a profiler and a private investigator try to piece together the mystery.

Single father and former cop Tom Cutler has an unusual occupation: he cleans up death scenes. But when he's called in to sterilize a wealthy suburban residence after a brutal shooting, Cutler is shocked to learn he may have unknowingly erased crucial evidence, entangling himself in a dirty criminal cover-up.

After a heist, four criminals lay low in a remote safehouse, waiting for orders. As paranoia builds, one thing becomes clear — the real threat may not be outside, but among them.

A newsman works with a blind puzzle-solver to uncover a deadly conspiracy linked to a genetic research facility.

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.