LAPD detectives juggle multiple investigations at once as a rash of serial killings terrorize the people of Los Angeles starting in the mid-1970s; Detectives Bob Grogan and Tom Lange hunt the Hillside Strangler and the Skid Row Stabber.

Detective Bob Grogan has a creeping suspicion that the Hillside Strangler may in fact be two men working together; Detective Tom Lange gets a break in his pursuit of the Skid Row Stabber.

The Sunset Strip Killer is at large, and detective Frank Garcia deciphers newly-found clues; the serial killers of this chilling era go to trial and receive their sentences, giving their victims justice.