Years ago when the most dangerous prisoners of Alcatraz mysteriously disappeared, they resurface in the present day as part of a larger conspiracy, leaving a police detective, an expert on Alcatraz and an FBI agent to track them down.

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.

Guy Hastings, an Alcatraz guard, reappears. Although a good man, Hastings is being asked to do bad things and will come face-to-face with an old acquaintance.

Herman and Pinky Ames, who almost escaped in 1963, return to Alcatraz in the present day and find something strangely wrong.