TRACKRS: On the Cold Trail of a Serial Killer is the true account of the modern day pursuit of a serial killer who terrorized Orange County, California in the late 1970s. The victims were young females living in apartments, alone when they were attacked. Their murders were gruesome and brutal. All had been sexually assaulted. Beginning in October of 1995, two Orange County deputy district attorneys, Michael Jacobs and Mel Jensen, focus their review of homicide cases on seven cases (six being homicides) that took place in three cities in Orange County. The cases are strikingly similar. There has already been a conviction in one of the cases. The defendant is in state prison and has always maintained his innocence. Jacobs and Jensen doubt he is a serial killer. After months of delay caused by the Orange County Sheriff's DNA Laboratory's refusal to process evidence from four of the crime scenes, a DNA profile of the suspect is finally obtained. A potential suspect is a former United States Marine sergeant who had been convicted in 1980 of the kidnapping and rape of a thirteen-year-old girl. On June 14, 1996, three detectives from the Costa Mesa and Tustin police departments travel to Avenal State Prison to interview the suspect.