Movies like Relentless

Warren Stacy, an office equipment repairman, begins murdering women after they reject his advances. To minimize the evidence, Stacy always kills while naked, wearing nothing but gloves, and further evades the law with his strong alibis. Veteran detective Leo Kessler is convinced of Stacy's guilt and begins using questionable methods to catch him.

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.

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?

Demoted Pittsburgh cop Tom Hardy works river patrol while a serial killer targets women from his past, forcing him to conduct an unauthorized investigation to prove his innocence and expose a dirty cop.

Anna is living with "face-blindness" after surviving a serial killer's attack. As she lives with her condition, one in which facial features change each time she loses sight of them, the killer closes in.

An agoraphobic psychologist and a female detective must work together to take down a serial killer who copies serial killers from the past.

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.

Private eye Philip Marlowe is hired by ex-con Moose Malloy to find his girlfriend, a former lounge dancer. While also investigating the murder of a client and the theft of a jade necklace, Marlowe becomes entangled with seductress Helen Grayle and discovers a web of dark secrets that are better left hidden.

Homicide detective John Hobbes witnesses the execution of serial killer Edgar Reese. Soon after the execution the killings start again, and they are very similar to Reese's style.

Mysterious Orfamay Quest hires Los Angeles private investigator Philip Marlowe to find her missing brother. Though the job seems simple enough, it leads Marlowe into the underbelly of the city, turning up leads who are murdered with ice picks, exotic dancers, blackmailed television stars, and self-preserving gangsters. Soon, Marlowe's life is on the line right along with his case.

A killer dressed in a police uniform begins murdering innocent people on the streets of New York City.

A tough cop is dispatched to take down a serial killer who has been targeting police officers.