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thriller
Series · thriller
The Gray Man
The Gray Man series by Mark Greaney has 15 known books (15 published) and is best read in publication order, starting with The Gray Man (2009). The latest book with a fully recorded publication date is The Hard Line. The next announced book, Dark Union, is due 16 February 2027.
- Books
- 15 known books (15 novels)
- Published
- 15
- First published
- 2009
- Status
- ongoing
- Shelved under
- Thriller
- Last checked
Start here: The Gray Man (2009) — then read straight through in publication order.
Reading order
The date order of published books and any announced future entries — the default way to read the series.
- Book 1:
The Gray Man
The Gray Man (2009) introduces Court Gentry, a disavowed CIA black-ops asset turned freelance assassin, and became a mainstream hit well beyond thriller readers after its 2022 Russo brothers film adaptation starring Ryan Gosling. It runs 400 pages.
Alternative text for cover: Cover of The Gray Man - Book 2:
On Target
On Target followed in 2010, the second entry, continuing Mark Greaney's brutally kinetic, tradecraft-heavy style as Court Gentry takes on rival intelligence services and elite killers. It runs 433 pages.
Alternative text for cover: Cover of On Target - Book 3:
Ballistic
Ballistic came out on October 4, 2011, book 3 of the series -- the last entry before a real gap in the timeline, as the next novel skips ahead and the series goes on hiatus in-story. It runs 467 pages.
Alternative text for cover: Cover of Ballistic - Book 4:
Dead Eye
Dead Eye arrived on December 3, 2013, after that timeline gap, the fourth Gray Man novel and, at 279 pages, one of the shorter entries in Greaney's run.
Alternative text for cover: Cover of Dead Eye - Book 5:
Back Blast
Back Blast (2016) resumed the series on what became its now-annual February release schedule, the fifth entry after the earlier in-story hiatus. It runs 528 pages.
Alternative text for cover: Cover of Back Blast - Book 6:
Gunmetal Gray
Gunmetal Gray followed in February 2017, the sixth entry and, at 736 pages, one of the longest in the series, keeping Court Gentry's freelance missions running against rival intelligence services.
Alternative text for cover: Cover of Gunmetal Gray - Book 7:
Agent in Place
Agent in Place arrived in February 2018, the seventh Gray Man novel and the longest yet at 775 pages, part of Greaney's steady annual-February release rhythm.
Alternative text for cover: Cover of Agent in Place - Book 8:
Mission Critical
Mission Critical was published in February 2019, book 8 of the series, continuing Court Gentry's off-book missions for old CIA handlers against cartels and private military contractors. It runs 528 pages.
Alternative text for cover: Cover of Mission Critical - Book 9:
One Minute Out
One Minute Out was published in February 2020, the ninth entry, keeping to the research-heavy, weapons-and-tactics-accurate style Greaney carried over from his Tom Clancy continuation novels. It runs 512 pages.
Alternative text for cover: Cover of One Minute Out - Book 10:
Relentless
Relentless (2021) is the book where Russian intelligence officer Zoya Zakharova becomes central to the series, developing into Court Gentry's long-running partner and love interest from here on. It's the tenth entry, running 528 pages.
Alternative text for cover: Cover of Relentless - Book 11:
Sierra Six
Sierra Six came out in February 2022, the eleventh Gray Man novel, digging into Court Gentry's own past as a CIA-trained killer alongside the series' usual kinetic action. It runs 528 pages.
Alternative text for cover: Cover of Sierra Six - Book 12:
Burner
Burner arrived in February 2023, book 12 of the series, as the scope keeps widening to pit Court Gentry against near-peer state actors rather than just cartels and private contractors. It runs 528 pages.
Alternative text for cover: Cover of Burner - Book 13:
The Chaos Agent
The Chaos Agent arrived in February 2024, the thirteenth entry, continuing the series' escalating geopolitical stakes and Court Gentry's evolving partnership with Zoya Zakharova. It runs 560 pages.
Alternative text for cover: Cover of The Chaos Agent - Book 14:
Midnight Black
Midnight Black was published in February 2025, book 14 of the series, keeping Mark Greaney's annual release rhythm going fifteen years after the first novel. It runs 528 pages.
Alternative text for cover: Cover of Midnight Black - Book 15:
The Hard Line
The Hard Line was published in February 2026, the fifteenth and most recent Gray Man novel, with a sixteenth, Dark Union, already scheduled for February 2027. It runs 753 pages.
Alternative text for cover: Cover of The Hard Line
About The Gray Man
Court Gentry — the Gray Man — is a disavowed former CIA black-ops asset who now works as one of the world's most sought-after freelance assassins, taking on jobs (and increasingly, off-book missions for old CIA handlers) that pit him against rival intelligence services, cartels, private military contractors and other elite killers. Mark Greaney writes brutally kinetic, tradecraft-heavy action that unfolds in real geopolitical hotspots, and the series has only gotten bigger in scope as it's gone on: later books put Court up against near-peer state actors (Russia, China), give him a long-running partner and love interest in Russian intelligence officer Zoya Zakharova, and dig into his own past as a CIA-trained killer.
Greaney, who co-wrote several Tom Clancy continuation novels before and during this series, brings the same research-heavy, weapons-and-tactics-accurate style to Court Gentry's story, which began with The Gray Man in 2009 and became a mainstream hit after the 2022 Russo brothers film adaptation starring Ryan Gosling introduced the character to a much wider audience. Released on an annual February cadence for over a decade, the series is a good fit for readers who want their spy-thriller violence relentless, their protagonist morally gray, and their tradecraft convincingly researched.
Frequently asked questions
How many Gray Man books are there?
There are 15 Gray Man novels as of The Hard Line (2026), with a 16th, Dark Union, due 16 February 2027.
What order should I read the Gray Man books in?
Publication order, starting with The Gray Man (2009). The series is continuous — Court Gentry's relationships and CIA standing carry forward from book to book.
Is the Gray Man movie based on the books?
Yes. The 2022 Netflix film The Gray Man, directed by the Russo brothers and starring Ryan Gosling, is a loose adaptation of Greaney's first novel, with reported changes to plot and characters.
Do I need to read the Gray Man books in order?
Yes, more than most thriller series. Court's evolving relationship with Zoya Zakharova, his fractured ties to the CIA, and fallout from earlier missions are ongoing threads best followed in sequence.
When is the next Gray Man book coming out?
Dark Union, the 16th Gray Man novel, is scheduled for release on 16 February 2027.
If you like The Gray Man
Reading order last verified .