Retired Detective Ken Mains teams up with an inmate on death row to expose the secrets of unknown serial killer Joseph Naso. While bringing closure to a victim's family, Ken uncovers that Naso likely killed many more women than police ever thought.

Retired Detective Ken Mains and inmate Bill Noguera uncover chilling new details about serial killer Joseph Naso who posed as a pro baseball team's photographer to hunt women and may have gone on a killing spree in Sin City.

Bill Noguera gets a written confession from serial killer Joseph Naso, cracking open another cold case from his. Detective Mains uncovers more potential victims from an infamous case in New York.