The Hillside Stranglers (1989)

This true crime story focuses on Kenneth Bianchi (Billy Zane) and Angelo Buono (Dennis Farina), two cousins who shared a taste for murder. Dubbed "The Hillside Strangler" by the media, the duo went on a vicious murder spree in the late 1970s that left countless women dead. When the two are finally caught and arrested by the police, Sgt. Bob Grogan (Richard Crenna) must work against the clock to prove to the district attorney that there is enough evidence to prosecute both men for the crimes.