When a sniper begins targeting young victims, the team is forced to retrace the steps of the past in order to solve this modern day mystery.

When child killer Kit Nelson, a terrifying kidnapper who always returns his victims home - after he's killed them - reappears from the past, the team is in a race against time to catch the man before he kills again.

Clarence Montgomery was the only innocent man in Alcatraz, but he's returned and is committing crimes.

Rebecca, Doc, and Hauser set out to capture musically-inclined serial killer Webb Porter, an unknown ’63 that returns more violent than ever.