Below is the complete list of Mark Greaney books in order. For each series, the chronological reading order is the same as the order of publication.
Publication Order of Court Gentry / Gray Man Books
- One Minute Out (2020)
In the Gray Man series, One Minute Out is book #9 and was published in 2020. 
Publication Order of Joshua Duffy Books
Publication Order of Standalone Books
Publication Order of Jack Ryan Universe Books
Publication Order of Jack Ryan Books
Publication Order of Jack Ryan, Jr. / Campus Books
About Mark Greaney
Mark Greaney is an American thriller writer best known for creating Court Gentry, the highly skilled covert operative at the center of the Gray Man series. His career combines original espionage fiction with a significant period working in Tom Clancy’s Jack Ryan universe, and his books are marked by international settings, intelligence operations, military detail, and action built around the practical pressures of modern conflict. Greaney holds a degree in international relations and political science, an academic background closely aligned with the geopolitical interests that later became central to his fiction.
His breakthrough came with The Gray Man in 2009. The novel introduced Court Gentry, a former CIA operative who moves through the clandestine world under the Gray Man identity. Gentry is exceptionally capable but not emotionally detached from the consequences of his profession, giving Greaney a protagonist who can sustain both large-scale action and longer questions about loyalty, institutional betrayal, personal obligation, and the moral compromises of covert work. The debut developed into a major continuing series, with novels such as On Target, Dead Eye, Back Blast, and Agent in Place expanding Court’s history and the network of intelligence officers, enemies, allies, and competing interests around him.
Greaney’s approach to thriller writing is strongly research-driven. In preparing his fiction, he has traveled extensively across dozens of countries and undertaken training connected with firearms, battlefield medicine, close-range combat, and other operational subjects. That research is reflected less in static displays of technical knowledge than in the physical logic of his action scenes: movement, surveillance, weapons, injuries, transportation, communications, and the limitations placed on characters in hostile environments. His novels frequently operate across borders, shifting between intelligence agencies, private actors, criminal organizations, and state interests.
A major second phase of Greaney’s career began when he entered Tom Clancy’s fictional world. He collaborated with Clancy on Locked On, Threat Vector, and Command Authority, the last three novels published during Clancy’s lifetime. After Clancy’s death in 2013, Greaney continued writing within the Jack Ryan universe, producing Support and Defend, Full Force and Effect, Commander in Chief, and True Faith and Allegiance. These books required him to work inside one of modern commercial thriller fiction’s most established continuities while handling characters and geopolitical structures created by another author.
Greaney eventually stepped away from the Jack Ryan franchise to concentrate on his own work. The Gray Man series remained the center of his bibliography and reached a wider popular audience when the original novel was adapted into a 2022 film starring Ryan Gosling as Court Gentry. The screen version increased the character’s visibility, but Greaney’s novel sequence had already developed its own extensive continuity, with Court’s relationships, CIA history, and shifting position within the covert world changing across successive books.
His other fiction shows that his interests extend beyond one protagonist. Red Metal, co-written with H. Ripley Rawlings IV, is a large-scale war thriller that imagines a modern conflict across multiple theaters and viewpoints. Armored introduced Josh Duffy, a former military contractor drawn into a dangerous security mission, and Sentinel continued that character’s story. These books preserve Greaney’s interest in operational tension while allowing him to work with different forms of military, diplomatic, and private-security conflict.
Across his career, Greaney has developed a recognizable place in contemporary international thrillers: fast-paced without abandoning procedural detail, global in scale but usually anchored in the immediate decisions of people under pressure. His bibliography is most clearly understood through three major strands—the evolving Gray Man saga, his substantial contribution to the Jack Ryan universe, and newer military and security thrillers that broaden the range of his work beyond Court Gentry.