Orphan X is the first installment in Gregg Hurwitz’s long-running Orphan X series, a thriller saga that follows the story of Evan Smoak, known as Orphan X or Nowhere Man. Evan is a solitary protagonist who is trained from childhood to be a professional hitman. The series includes 11 novels: Orphan X (2016), The Nowhere Man (2017), Hellbent (2018), Out of the Dark (2018), Into the Fire (2020), Prodigal Son (2021), Dark Horse (2022), The Last Orphan (2023), Lone Wolf (2024), Nemesis (2025), Antihero (2026). The books trace his journey from a ruthless assassin to a vigilante protector reconnecting with his humanity, exploring both his past and present.

The series’s premise centers on the “Orphan Program,” a clandestine government operation that recruits and trains vulnerable children to become covert assassins. This concept of using untraceable individuals for covert missions draws from the history of real-world intelligence operations, such as the CIA’s Cold War-era programs that utilized assets outside traditional government structures for high-risk assignments. Evan becomes the program’s most skilled operative. After years of service, he breaks from his handlers and goes underground, driven by a new purpose. Evan reinvents himself as the “Nowhere Man,” a mysterious and elusive figure who uses his lethal abilities to help people in despair.

This framework establishes the series’ narrative structure. Each novel features a new mission as Evan helps a new client, while simultaneously advancing the overarching story of his past. Evan must constantly evade former colleagues and superiors from the Orphan Program who are determined to eliminate him, forcing him to confront the system that created him. The ongoing conflict between his violent past and his quest for redemption becomes a central theme, as his isolated existence is increasingly complicated by the human connections he forms.