In Baltimore, a killer strangles two women to death less than a week apart. Investigators piece together the clues from CCTV footage from the locations of the two homicides to reveal a suspect with designs on becoming a serial killer.

When 71-year-old Cindy Mudd goes missing, the Kanawha County Sheriff's Office turns to CCTV to retrace her movements. They follow a trail of surveillance footage to zero in on their suspects and reveal the shocking truth of what happened to Cindy.