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Gray Man #15

The Hard Line

Not yet published
Expected 17 Feb 26
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The Gray Man, the world’s deadliest assassin and apex predator, discovers he’s really the prey in the most shocking entry of this #1 New York Times bestselling series.

Family means different things to different people, but in the Gray Man’s world, family is defined by blood—the blood you share with some and the blood you shed with others.

Court Gentry’s current family operates out of an office park in Norfolk, Virginia. The Ghost Town is an off-the-books direct action team run by Matt Hanley, former CIA Deputy Director. They take on the jobs the Agency needs handled “discretely,” and those jobs are rolling in.

Somewhere at the top of the US Intelligence apparatus, security experts and intelligence operations worldwide are threatened.

It starts with a blown safe house in Tunis. Then Court himself barely escapes from an ambush in the jungles of Nicaragua. Now key members of the U.S. counterintelligence community are being assassinated in their own neighborhoods. With the feds compromised, it’s up to Court and his team to stop the hit squads.

But eliminating professional kill teams may be the least of the Gray Man’s worries when he finds himself targeted by the legendary assassin codenamed Whetstone—a man driven out of retirement by a very personal quest to rain down hellfire on Court and everyone he’s ever loved, starting with the father he hasn’t seen in twenty years.

496 pages, Hardcover

Expected publication February 17, 2026

15 people are currently reading
1315 people want to read

About the author

Mark Greaney

60 books6,234 followers
Mark Greaney has a degree in International Relations and Political Science. In researching The Gray Man series he traveled to ten countries and trained extensively in the use of firearms, battlefield medicine, and close range combative tactics.

Learn more at MARKGREANEYBOOKS.COM

Email Mark at MarkGreaneyBooks@gmail.com


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Displaying 1 - 14 of 14 reviews
Profile Image for Steven Netter.
463 reviews42 followers
November 24, 2025
READ MY FULL REVIEW AT Best Thriller Books

Intense, bloody and emotionally charged, The Hard Line is a masterful continuation of the celebrated Gray Man series. Filled with enough action, danger and death to choke a horse, it will pump adrenaline through your body, elevate your heart rate and make you sweat as you become fully invested in the outcome. It’s another smash hit by the great Mark Greaney!

Greaney dials up the violence and tension to eleven right off the jump and keeps it there throughout this insanely engaging novel. And while thriller junkies will flip head over heals for the action sequences, what makes The Hard Line so fantastic is how it highlights the relatability, vulnerability and moral compass of the great Gray Man and his colleagues.

This novel has all the hallmarks of a best-selling thriller, and you won’t be able to put it down. And when you finish it your mind will be blown, and you will be jonesing hard for the next Gray Man adventure.
Profile Image for Steve.
Author 6 books2 followers
Read
January 8, 2026
Apparently my uncorrected proof is blocked from a rating, so I'll have to add a rating (5 stars despite and because of the ending) when <>The Hard Line officially comes out in February.

Mark Greaney builds on the Gray Man legend in this outing, and there are familiar faces, fresh action, and callbacks to earlier books, because this series only improves with each entry. It's a series that is worth reading again precisely because of that layering and Greaney's devotion to building characters and still offering original ideas. It's definitely reminiscent of Tom Clancy's work as he built his "Ryanverse," and Greaney offers some of that complexity with this novel about spies, traitors, and assassins.

At its heart The Hard Line seems to examine the idea that actions have consequences, opening with a scene only briefly mentioned in the prior book, Midnight Black, and how Court's quest from had an unexpected impact on his life. I stopped last night before midnight with only 50-60 pages left to read, as I wanted to savor the conclusion, and I was right as it would have been impossible to not spend another hour or two finishing the book. That delay didn't help, as I had dreams in anticipation and cracked the book here a few hours back at 4 a.m. to finish now.One thing I know for certain after finishing this book as my first for 2026 is that it's going to be damn long year waiting for the sixteenth entry next year.

I had the mass market of The Gray Man for a while before reading it back in 2021, and while that delay let me binge most of the books, these last few years were agony waiting for the next one. I may just have to start over at the beginning with that first book again.
Profile Image for PamG.
1,314 reviews1,057 followers
Review of advance copy received from Netgalley
January 17, 2026
As usual, Mark Greaney brings his usual excellent political action-adventure storyline to the fifteenth book in the Gray Man series, The Hard Line. A central theme in this novel is family. Court Gentry’s definition is those who share your blood as well as the blood you shed for others.

Besides his father in Florida, Court’s family operates out of an office park in Norfolk, Virginia. The Ghost Town is an off-the-books direct action team lead by former CIA Deputy Director, Matt Hanley. They take on jobs the Agency needs handled discreetly. There’s a leak in multiple intelligence agencies threatening operations worldwide. This is followed by hit squads killing multiple members of the counterintelligence community. On top of this, there are men who specifically want to kill Court (if they can identify who he is).

Court is a former CIA paramilitary operations officer, and former CIA contract agent. He is perceptive, determined, and able to quickly assess situations. Readers gain knowledge of Court’s disposition and frame of mind as the story progresses. There are a host of additional characters, but readers of the series will be familiar with some of them. There’s also a character list at the beginning of the book.

Greaney is an excellent storyteller who is skilled in bringing together diverse characters and plenty of pulse-pounding exhilarating action. The novel starts with an action scene in Bulgaria that sets the stage for part of the later action. From beginning to end, the atmosphere is electric. The dynamic plot came alive with the constant sense of danger, urgency, and uneasiness keeping me fully engrossed in the story. The world-building is excellent and transported me to the various locales including Bulgaria, Nicaragua, and Washington D. C.

The book is insightful and moving, highlighting how corruption can exist beneath the surface and have a major impact on politics and the lives of many others. Readers become invested in the story right from the start with the thought-provoking plot, danger, and action. There’s a strong sense of unease throughout the novel. My biggest quibble is the ending. Too many situations are left up-in-the-air and not fully resolved.

Overall, this is an intriguing, engrossing, and suspenseful thriller that’s full of action, trust, secrets, family, murder, power, and much more. I can’t wait to read the next book in the series. I recommend this series to those who like political, action, and espionage thrillers.

Berkley Publishing Group – Berkley and Mark Greaney provided a complimentary digital ARC of this novel via NetGalley. All thoughts and opinions expressed in this review are my own. Publication date is currently set for February 17, 2026.
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My 4.12 rounded to 4 stars review is coming soon.
Profile Image for Pam Elliott.
83 reviews10 followers
December 1, 2025
The Hard Line is Mark Greaney’s 15th novel in the Gray Man series. I have been a fan from the beginning of these action thrillers, and Greaney’s latest is another winner. Usually, this series takes you around the globe with international intrigue, espionage and conspiracies. And while The Hard Line starts in Tunis, most of this thriller is set in the US for the first time – at least that I can recall – which makes for a fun read for Gray Man fans.
Key members of the US counterintelligence community are being assassinated in their own neighborhoods. The Gray Man (Court Gentry) now works off book for a dark intelligence group so it falls to them to stop the destruction since the feds have been compromised. And to make matters more dangerous, Gentry finds himself the target of one of the several foreign assassins working in the US. Why is this happening and who is the federal mole? The Gray Man is joined by the usual team of agents, aging now, but still capable of taking on the most dangerous missions.
If you have read this series before, you know that Gentry is perhaps unbelievably successful in all his missions; some say the series is comic-book unrealistic. But I enjoy his ability to beat back the enemy with his brains and brawn. I do suggest those who are new to the series start with the first – The Gray Man (2009) – because there is a great deal of character development in Gentry and his teammates.
I find that enjoyable series, like the Gray Man, are especially fun to read due to the long-term relationships I can have with characters who grow and change. I have formed a strong connection to Gentry over the years. Plus, this Greaney outing again leaves me with a cliffhanger which excites me for the next installment, hopefully next year.
My rating: 5 of 5
This ARC title was provided by Netgalley.com at no cost, and I am providing an unbiased review. The Hard Line will be published on February 17, 2026.
Profile Image for Kristine.
3,444 reviews52 followers
Review of advance copy received from Netgalley
January 21, 2026
I wish I could give it 6 stars ⭐️

Man, I love this series so much. It is one of the very few series that I look forward to and anticipate the one book a year that will be coming out. And the fact that we are on book 15 and the series is only getting better is just icing on the cake.

Even though this is a genre with many fantastic authors, Mr. Greaney is somehow able to make this action thriller even better with such a depth of the characters - especially our MC Courtland Gentry -and the dynamic and changing relationships that he has with the secondary characters. This book, in particular, brings back several people that we have come to know and love, and some others that have teetered back and forth on the edge between good guy and not so good guy.

One thing that was interesting was that the start of this book goes back and takes an event that happened in the last book (Midnight Black) and takes us deeper into that scene to get a perspective that we were not able to see in the last book. That one scene sets up the entire rest of this book. Crazy, right?

As usual, this book is fast paced and filled with non-stop action. The action starts from the beginning, and it does not stop until the very end. I kept wondering how in the world everything was going to be resolved in the time left in the book and when I got to the end, I realized that it wasn't. We finish this book with some unresolved dilemmas and the set-up is made for book 16.

To be honest, my stomach was in knots through most of this book and I have realized that I am so invested in this flawed but utterly adorable man. Court, Six, Violator, The Gray Man.....whatever you want to call him.....he is one of a kind.

Thank you to NetGalley and Berkley Publishing Group | Berkley for the opportunity to read and review this ARC. This book will be out for publication on February 17, 2026.
Profile Image for Michelle Bochniak.
243 reviews15 followers
November 1, 2025
𝔹𝕠𝕠𝕜 ℝ𝕖𝕧𝕚𝕖𝕨 ⭐️⭐️⭐️⭐️⭐️

Read if you like:
🚨 nonstop action
🚨 revenge plot
🚨 books in a series
🚨 side stories

Hardline by Mark Greaney is the 15th installment into the Gray Man Series. This next chapter follows our protagonist, Court Gentry as he must face something he has never before encountered, the family member of a random bodyguard that gets in between him and his mark.  But what happens when the seeming no body turns out to have a father that is a somebody. Not only does Court need to contest with an assassin that has it out only for him, but he must unravel a plot that has the lives of many people in the balance. We see Court try to balance his personal life and his professional life in a story that pushes him to his limits.

This book was hands down one of the best in the series.  Mark Greaney made sure to keep all the characters that his readers have grown to love into one story.  Not only is it one conducive story, but he has lines of side stories weaved in as well.  In every book Greaney tries to peel back more of Court’s past and this book did the same.  The story is action packed with suspense.  I can’t rave enough of about this book. If you are already a fan you will love it and if you have never read a Gray Man book you will be in for a treat which will have you wanting to read the rest of the series.

Thank you Netgalley, Mark Greaney, and Berkley Publishing Group for allowing me to read an advance copy.
Profile Image for Ralph Smith.
380 reviews15 followers
November 18, 2025
This eARC was provided by Netgalley.com and I am giving an unbiased review.

This is book number 15 in 'The Gray Man' series by this author. Again, Greaney has surprised me with a story line that he has been able to further on a great character. After the last book, where Court rescued his love, he is now pulled back into Ghost Town with Hanley, his old Sierra Six leader, and some other office operatives. This time there is a threat to US agents/teams around the world as somehow information of their whereabouts are being released and they are being murdered. As Court and his team investigate outside of any US agency protocol to find the leak, they discover more intrigue.

This has got to be the least action-oriented novel in this series, and concentrates more on intelligence info, deductive reasoning, and how the other World Powers work against each other. I found myself drawn more into the story as the alleged fictional happenings just sound believable in today's current times of crisis. At times it felt like the smokescreens were more than three deep, as they work to unravel the plot.

Kudos to Greaney! Another great read, and I am so hoping for at least a few more stories of Court and his retinue, even if we step out of the government-type intrigue and maybe just something like protecting their lives (and lives of the children). I'm throwing out 4.5 stars, though most sites only let me go to whole numbers.
This entire review has been hidden because of spoilers.
Profile Image for Mike Kennedy.
966 reviews25 followers
Review of advance copy received from Netgalley
January 3, 2026
Court Gentry, better known as the Gray Man, dives into chaos from page one. When he targets an Eastern European gangster, he’s forced to eliminate several hired guns protecting the target. What he doesn’t realize is that one of those men is the son of Whetstone, a legendary Northern Irish assassin. Whetstone resurfaces with a single mission: to end the Gray Man.

Meanwhile, back in the U.S., Gentry and his off-the-books team, codenamed Ghost Town, come under attack from an unknown advisary with a mole buried deep inside the government. As the hunt for the traitor intensifies, low-level government employees start turning up dead. Gentry must unravel the conspiracy while staying alive, because Whetstone is closing in.

The Hard Line cranks up the violence and tension from the start and doesn’t let up until the final page. It’s a fast-paced, edge-of-your-seat thriller packed with relentless action. It feels like every other chapter another showdown or gunfight is happening. The dual storylines mesh perfectly, and the phone exchanges between Gentry and Whetstone are outstanding.

While it is just the beginning of the year, I have a feeling The Hard Line will remain one of the best books I read in 2026. Mark Greaney is a master of pacing and suspense. If you’re a fan of spy thrillers, this is an absolute must-read. Thank you to NetGalley, Mark Greaney, and Berkeley Publishing Group for a free advanced readers copy for an honest review.
Profile Image for Dawn.
481 reviews24 followers
Review of advance copy received from Netgalley
January 17, 2026
From the opening pages the action is intense and relentless! Court Gentry, aka The Gray Man, Sierra Six, Violator, is once again working for his former CIA handler, Mike Hanley, and an off the books team, code name Ghost Town. It soon becomes apparent that a high-ranking mole is systematically eliminating members of US intelligence agencies. As if stopping these hits weren’t dangerous enough, Gentry also finds himself personally targeted by a legendary assassin bent on revenge.
Blending familiar characters with new ones, Greaney delivers yet another fast paced, edge of your seat thriller. This series never feels like the same character dropped into different scenarios; instead, the Gray Man continues to evolve, age and reveal more of his personality and vulnerability with each installment. The sharp banter adds both humor and depth, making the characters feel even more real.
This is a series worth starting from the beginning, as the character and relationship development pays off and several threads are now coming full circle.
This novel ends with a tantalizing reveal that has me already eagerly awaiting the next release!
Profile Image for Bruce Raterink.
848 reviews32 followers
Review of advance copy received from Netgalley
January 20, 2026
The 15th book in the Gray Man series is another high octane, action packed, political thriller with engaging characters and a fast paced plot. Like his other books, there are a lot of characters and a lot going on at the same time. I literally could not put it down and blew through it in a little over a day. it does leave a few unresolved issues and a bit of a cliff hanger which makes me that much more anxious for the next book in the series. if you are new to the Gray Man series, I urge you to start with the first book, "Gray Man," and read the series in order to follow the recurring character's careers and relationships. Highly recommended

Thanks to NetGalley and Berkley for an advanced reader copy.
Profile Image for Nick Babbitz.
11 reviews3 followers
Review of advance copy received from Netgalley
January 21, 2026
I received an early copy of this via NetGalley.

This is a classic Gray Man thriller. Court and his teammates work to stop a series of assassinations involving members of the intelligence community. But it wouldn’t be a Grey Man book if there wasn’t a complication. Apparently Court killed a legendary Irish assassin’s son and the man wants revenge.
Loved this book. Love this series. Action packed, full of suspense and plenty of twists and turns right up to the last page.
Can’t wait for the next book in the series.
Profile Image for David Jonescu.
112 reviews3 followers
January 22, 2026
The Gray Man series is always a series i look forward to continue. Once again, Mark Greaney knocks it out of the park. This may be one of my favorite in the series. Lots of action and just craziness that happens. Overall very well written book and highly recommend.

I received a free advanced copy of this book through NetGalley in exchange for an honest review.
264 reviews5 followers
November 3, 2025
Wow. I really enjoyed reading this one and did NOT want it to end. The multiple groups of assassins was a very interesting plot, as was Court's own little personal mission, or rather the personal mission of him being hunted. I also liked the snippet at the beginning that filled in a plot point from the last book - kind of cool to see that overlap. But c'mon once you read this, the thing that will stick in your mind the most, as it has mine is the ending.....and wishing that the next book in the Gray Man series came out ASAP!

One thing I will say though - while I LOVE the Gray Man in any capacity, I'm starting to long for the Gray Man of old - the one on his own without a big supporting cast.

Everyone needs to read this the first chance they get - you will NOT be disappointed!

Thank you to Net Galley and Berkley Publishing group for this ARC. #TheHardLine #NetGalley
Displaying 1 - 14 of 14 reviews

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