After the shooting of 20-year-old Gabriel Perez at a fast food restaurant in Fargo, investigators follow a CCTV trail to zero in on a middle-aged couple with no obvious link to the victim, and unlock a secret with deadly consequences.

After the murder of Johnny Soekhies in Alabama, authorities turn to CCTV to hunt his killer. Footage reveals a vehicle driving Johnny to the place of his eventual murder and captures a glimpse of a sinister figure lurking in the shadows.

After the shooting of a military veteran in his own home, detectives hunt a trail of CCTV across Kansas City to find his elusive killers. Grainy footage reveals a connection between the hooded assailant and the driver of a silver BMW.

When Merrilee Cox-Lafferty disappears in Utah, investigators turn to CCTV to track her down. Then her car turns up 300 miles away in Idaho, new persons of interest enter the frame, and Merrilee's disappearance is something more sinister.

When a gunman shoots Reggie Ward at a gas station in Cedar Rapids, Iowa, witnesses and the victim's girlfriend, are unable to identify the shooter. Investigators follow a trail of surveillance footage and GPS data to find an unexpected suspect.