A serial killer shifts his focus from hunting female victims to stalking the two detectives attempting to end his reign of terror in this tense crime thriller inspired by actual events. When a secluded Texas marsh becomes the dumping ground for a murderous maniac who preys on young females, local homicide detective Mike Souder (Sam Worthington) teams up with transplanted New York City detective Brian Heigh (Jeffrey Dean Morgan) to put an end to the vicious killing spree. Meanwhile, the cunning psychopath quickly turns the tables on his pursuers with a tantalizing series of carefully placed clues. But when the elusive killer makes the fateful mistake of abducting a young girl (Chlo? Grace Moretz), he severely underestimates the detectives' determination to bring her home alive.