Patrick Bowers has pursued the nation's fiercest serial killers and now one elusive foe is back for revenge. Settling into a new post at the FBI academy, Patrick and his fiancée, Lien-hua Jiang, are planning their future together with his stepdaughter, Tessa. But just when his life seems normal, a demon from the past returns to draw him down a dark road he hoped had closed forever. Forced into a desperate hunt to save the two women he loves most, Patrick is in a race against time to stop an international conspiracy from becoming the most widespread act of terrorism in U.S. history.