Delirium (1972)

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.

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.

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.

Wes Block is a detective who's put on the case of a serial killer whose victims are young and pretty women. The murders are getting personal when the killer chooses victims who are acquaintances of Block. Even his daughters are threatened.

A woman recovering from a nervous breakdown tries to convince her husband and and the local London police that she has witnessed a murder in the abandoned house next door.

Two veteran New York City detectives work to identify the possible connection between a recent murder and a case they believe they solved years ago; is there a serial killer on the loose, and did they perhaps put the wrong person behind bars?

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.

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

After murdering an undercover DEA agent, two corrupt cops scramble to cover up what they've done.