Recruited as a field operative, Scot Harvath has just returned from his first assignment abroad when a bombing in Rome kills a group of American college students. The evidence points to a dangerous colleague from Harvath's past, and Harvath is tasked with leveraging his relationship to lure the man out of hiding and destroy him. But what if he has the wrong man? Simultaneously, a young woman is struck by a taxi in a hit-and-run in Chicago, and city police soon abandon their fruitless investigation. But when the family's attorney digs deeper, he uncovers a shocking connection to the Rome bombing and the perpetrators' plans for America.