What is the Gray Man book series about?
All 14 Gray Man books, in order of date published, and chronological order.
The "Gray Man" series by Mark Greaney follows Court Gentry, a former CIA operative turned assassin, known for his ability to disappear and his lethal skills. As he takes on dangerous missions across the globe, Gentry navigates a world of espionage, betrayal, and relentless pursuit by those who want him dead.