Relentless (1989 film)

Relentless is a 1989 American crime film directed by William Lustig and starring Judd Nelson, Robert Loggia and Leo Rossi. The film follows two LAPD officers on a hunt for a serial killer.

Sam Dietz Leo Rossi is a rookie Los Angeles detective recently transferred from New York City. He is paired up with veteran detective Bill Malloy Robert Loggia in order to find and stop a serial killer. The killer is Arthur Buck Taylor Judd Nelson, the son of a former LAPD cop whose motive for killing is frustration over not having been accepted to the force and failure in the eyes of his father. Taylor chooses his targets by randomly looking up their names in the phone book and skillfully covering up his tracks by using his skills and knowledge that he learned while on the force. While in pursuit of Taylor, both Dietz and Malloy become his next planned targets for murder.

Source: Wikipedia