"The Lion's Game" is a thriller novel written by author Nelson DeMille. It follows the story of John Corey, a former NYPD homicide detective who is recovering from gunshot wounds. Corey is drawn into a complex investigation involving a Libyan terrorist known as The Lion, who is seeking revenge for his family's death during a U.S. military operation. As Corey delves deeper into the case, he uncovers a web of deception and danger. The novel explores themes of justice, morality, and the impact of terrorism, while also showcasing Corey's sharp wit and determination to bring The Lion to justice.