Delirium (1972)

A female serial killer who killed four young girls is sent away to prison, but a fifth victim escaped with her life. Twenty years later, the killer escapes and begins hunting for the one who got away.

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.

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.

Oliviero is a drunk, burned-out writer who amuses himself by hosting orgies at his grand country manor and humiliating his wife Irina. When a number of women are murdered in grisly fashion, Oliviero becomes a prime suspect.

A journalist finds himself on the trail of a murderer who's been targeting people around him, while the police are considering him a suspect in their investigation.

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.

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

Rich entrepreneur Rebecca Zuin has died from an alleged heart attack, raising suspicions on the part of a police inspector after her body disappears from the morgue. When her handsome young husband becomes a suspect, he starts thinking she may have faked her death to sadistically torment him.

Jane Marple solves the mystery when a local woman is poisoned and a visiting movie star seems to have been the intended victim.

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.