New books · Author
Mark Greaney's new book, next release date and all books in order
Quick answer
The next one is Dark Union, coming February 2027.
Mark Greaney writes the Gray Man thrillers about assassin Court Gentry, the books behind the Netflix film.
Checked Saturday, October 10, 2026
Upcoming Mark Greaney books
- Dark Union · February 2027 · Gray Man #16
Court Gentry believes his late brother may be alive after seeing him at their father's funeral. The U.K. edition is out February 23, 2027; U.S. listings also say February 2027. Source: Hachette UK
All Mark Greaney books in order
26 books, grouped by series, in reading order. Tick the ones you've read; your list is saved in this browser.
The Gray Man series
Jack Ryan series
Armored series
Standalone
Book list from Wikipedia (CC BY-SA), checked Saturday, October 10, 2026.
Common questions
What is Mark Greaney's new book?
The next one is Dark Union, coming February 2027.
When is Mark Greaney's next book coming out?
Dark Union comes out February 2027. Court Gentry believes his late brother may be alive after seeing him at their father's funeral. The U.K. edition is out February 23, 2027; U.S. listings also say February 2027.
What order should I read Mark Greaney's books in?
The Gray Man series: start with The Gray Man (2009). Jack Ryan series: start with Locked On (2011). Armored series: start with Armored (2022). The full list in order is on this page.
How many books has Mark Greaney written?
We list 26 Mark Greaney books, including those announced but not yet published.