Gregg Hurwitz is an American thriller author best known for the Orphan X series, beginning with Orphan X and centered on Evan Smoak, a former government-trained assassin who becomes the vigilante helper known as the Nowhere Man. The series combines... covert operations, high-level action, psychological pressure, and a continuing examination of what happens when a man shaped for violence tries to build an ordinary human life. Before Evan Smoak, Hurwitz wrote numerous standalones and the Tim Rackley thrillers, establishing his interest in damaged protagonists, institutional failure, hidden pasts, and moral choices with no clean outcome. Readers return to Hurwitz for rigorous research, propulsive pacing, physical intensity, and suspense where competence never protects characters from emotional or ethical consequence.