Amazing and explosive! Damn! He gets better and better!!
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If you’ve been reading the Gray Man series for a while, you know how addicting it can be. This new addition is going to rock your world.

Told from a dual point of view, today and 12 years ago, we get to see two sides of a story. We learn the story of how Zack and Court met and how these two time frames interconnect and inner weave throughout the book in the chase for a dead man.

This story is exciting, captivating, a little heartbreaking, and the climactic ending is a typical Greaney and Gray Man ending – tension-filled and explosive! I can never get enough.

I think every time I read a new addition to the series I say this one is my favorite, and Sierra Six I think is one of my favorites – again… I am unashamedly addicted. I just love Court in all of his creative, tortured, bad-ass ways.

I could go on and on about this series, the amazing talent this author has to captivate millions as he grabs our attention from page 1 and holds it completely through the entire book, and series.

Sierra Six is definitely not a story to miss and most assuredly a book you’re going to need to clear a weekend for. Might as well set that date right now!

Sierra Six is a white knuckle, action packed thrill ride unlike any other books in the Gray Man series as we get to witness Court become “Sierra Six” and the events that lead up to that. Mark Greaney continues to push the series to new heights and this one quickly became my favorite of the series replacing “Back Blast”. I can’t wait to see where Court goes from here, seeing Court in a team setting definitely has me hoping to see more of courts past missions with “the Goon Squad”. If somehow this one wasn’t already on your radar, remedy that ASAP!

After 10 Gray Man novels we finaly get an origin story on Courty Gentry and what an origin story it is. The story is told in two parts, one in the current day with Court chasing down a man he presumed dead and the other 12 years earlier on his first mission as Sierra Six. With plenty of action, drama and emotion this is one of the best Gray man novels to date

In 2020, I mentioned Mark Greaney’s Relentless as one of my most anticipated books of 2021. I did the same this year, listing his next Court Gentry novel, Sierra Six, as one of my most anticipated novels of 2022. And I was right.

Mark Greaney is the best living thriller writer in the world. He delivers hit after hit, and Sierra Six is a two-for-one, emotional, heart-pounding thriller. Greaney weaves two stories together, one from Court’s past, one from the present. From the outset, it’s obvious that these two stories are on a collision course.

Gentry is on a mission to find and kill a terrorist, but it’s a man that, according to the government, is already dead. It’s another action-packed Gentry novel, in the same vein that we’ve come to expect from Greaney’s superb writing. He has the supreme ability to weave stories that never lull in action. It is an emotional story that tugs at your heart. I literally felt my pulse quicken throughout different parts of the story, and I was even fighting back tears at times (no joke). Greaney has figured out how to draw emotion out of these characters that makes them feel so real.

Greaney combines these realistic characters with these plots, stories, and action sequences that seems so plausible and possible. It does make me wonder, is Mark Greaney actually Court Gentry in real life? I’ve never seen them in the same room together…

Sierra Six is a quick contender for one of my favorite books of 2022. It is hard to imagine anything could compare. It’s like having Usain Bolt running your first leg of a relay. He’s so far ahead, that it seems impossible that anyone will be able to catch him. Greaney delivers over and over, and Sierra Six should be a book that all thriller-lovers will enjoy.

Once again the best action and dialogue on the market!

Almost (IN A GOOD WAY) a throwback to the 80's and 90's when this genre was king before everyone had to be mentioned, recognized, and treated as equal.

Read everything MG writes, other than the knife fight in the first book he is good. :)

I absolutely love words. And, I have so much respect for people who can use them, turn ‘em into an amazing story. The twist and turns, past and present can come together and form something so real. I enjoyed the two stories in one. You read books that mention something happening in the past. It makes you want to know why. To learn who someone was before the experiences they had. For a story to come full circle. To appreciate on a much deeper level who someone is now.
Mark Greaney does this every time. The heartbreak, emotion, excitement all of it You feel it as if it’s happening right in front of you. At least, I do. It’s why I love this Author, series, character.
And I am so thankful for the opportunity to read this exceptionally wonderful book.

Sierra Six is the early leader in the clubhouse for the best thriller of 2022 and it will take something incredibly special to surpass it. Mark Greaney has delivered one hell of a book that instantly becomes my all-time favorite in the already magnificent Gray Man series. It’s perfection!

Fans of the series already know that Court Gentry is a bad ass mofo with an unmatched, somewhat superhuman skillset that allows him to operate solo and dispatch bad guys as if it’s a walk in the park. And while readers have been given glimpses into his past throughout the prior ten books, we’ve never heard the complete story of how Gentry became Sierra Six and operated as part of an elite CIA Ground Branch paramilitary team. Until now. And holy hell is it a spectacular story.

Court Gentry is hired to do a simple job – infiltrate the Turkish embassy in Algeria and plant a small device that will allow his client to eavesdrop on cell phone calls made in the vicinity. However, nothing is ever easy for the Gray Man and as the operation goes sideways, Court comes face to face with a ghost, someone he thought has been dead for 12 years. Cue the flashback to a dozen years ago, when Gentry was being integrated into Golf Sierra, a CIA action team on the hunt for a terrorist mastermind with visions of changing the political and military landscape of South Asia. The events of that time left an indelible mark on Gentry and now that this long-thought dead terrorist has reappeared, the Grey Man will do whatever it takes to finally put this son-of-a-bitch six feet underground where he belongs.

The brilliance of Sierra Six is that it’s like 2 amazing novels under one cover. Mark Greaney flawlessly switches back and forth between present day and flashbacks to 12 years ago in a way that does multiple things at the same time. First, it provides insight into Court Gentry’s past and his evolution as an operator. Second, it seamlessly draws parallels and connections between events a dozen years apart that enhance both storylines and provide depth that a single timeline wouldn’t be able to achieve. Third, it provides tremendous character development for Gentry by allowing us to witness a journey that makes him a little more human through mistakes and emotions that we didn’t know were possible for him. And finally, it reminds us how lethally awesome and relentless the Gray Man truly is.

When I read a book, I’m looking for three things – entertainment, something fresh and to feel an emotional connection to the characters. This book nails all three. Sierra Six is simply stupendous! It’s so freaking unbelievably great. And while it’s been obvious for a long time that Mark Greaney is inarguably one of the best authors in the genre, Sierra Six elevates him to a higher plane of thriller existence that few authors are able to achieve in their lifetimes.

Bravo Mr. Greaney. Thank you for the gift of this incredible novel.

Action? Copy. Intrigue? Copy. Everyone's favorite Anti-hero? Double copy.

Was this the BEST Gray Man book in the series? Maybe not. (DeadEye is my personal favorite). It is, however, in my top 3

This was one of the very first times that we got a peek into Court's past and his introduction to Golf Sierra. His sarcastic attitude and integrity shine through in so many ways in this book. The mirroring of the past and present in this book was superbly done.

Through much of the series I wondered why Violator's heart was so shut off from other people. Particularly from Zoya. It's clear that hes crazy about her, but I never understood why he was so hesitant to open his heart to her. NOW I GET IT. Thank you, Mark, for clearing that up.

I am never disappointed when I read a Gray man novel. I anticipate the next one highly.. Thank you to Netgalley, Random House Books and of course, Mark Greany for allowing me the privilege to read and review this great book. All opinions are my own.

Sierra Six is an explosive entry in Mark Greaney’s Gray Man saga with a deeper than ever insight into Court Gentry’s psyche and roots. Testament to the outstanding writing found in these books, Mark Greaney brilliantly circumvents the traditional linear narration for an unconventional route this time as the narrative moves forward in two parallel chains of events, one for current timeline, and one for Court Gentry’s first ever mission with the infamous Goon Squad twelve years ago.
After being branded persona non grata once again following the events of Relentless, Courtland Gentry is operating in the shadows as a hitman with strong moral codes. During a straightforward mission to plant surveillance bugs in the Turkish embassy in Algiers, Gentry gets more than he bargained for when he comes across a man who was supposedly killed twelve years ago. When Gentry takes a shot at his target, his cover is blown and his tech support for this particular mission, an Indian college grad, is captured. Racing against time, he follows the trail to India where he finds out his past isn’t done with him just yet.
There’s no denying the appeal of vivid and breathtakingly awesome action sequences in the Gray Man books. Sierra Six pushes the envelop of realistic and cinematic shootouts and hand-to-hand combat without tipping into the unbelievable. Whether Gentry’s taking out his adversaries with lightning quick headshots or jumping from one building to another in a wild foot pursuit in the urban sprawls of India, the beautifully descriptive narration keeps you on the edge of your seat with its WOW factor.
Gray Man has always been an enigma for readers. Mark Greaney reveals trickles of Gentry’s past but never the complete picture. It comes as a huge game-changer that Sierra Six dives deep into the makings of Gentry as the withdrawn and relentless assassin with a penchant for undertaking the most dangerous contracts and missions. We see Gentry as a young singleton operator in his mid-20’s who has grown comfortable in operating on his own. Against the wishes of his handler, he is added to the Golf Sierra team, led by Zack Hightower, after the team loses a member during a time sensitive mission in Pakistan. This book is undoubtedly one of the lengthier Gray Man books, but for great reason as we get to see Gentry’s uneasy interactions with his team and his makings as a fluid and adaptive team-player with wisdom imparted on him by his experiences from his first mission with the Golf Sierra team, a mission that heartbreakingly molds him into an even more ruthless killing machine.
I noticed some inconsistencies with regards to location research and cultural and linguistic nuances. The story takes place predominantly in South East Asia, particularly India and Pakistan. Research on India was laudably extensive despite the COVID travel restrictions. However, descriptions of Pakistan and the spoken languages (Hindi-Urdu) felt a bit alien based on my exhaustive experiences in the region. This could have simply been a fluke due to aforementioned COVID restrictions but came as a slight shock as Mark Greaney’s writings have always captured and reflected realistic descriptions of environments and situations.
Sierra Six fuels the readers with dangerously high doses of adrenaline from its rapidly evolving plot and escalating action sequences while grounding the story with pragmatic characters and unnerving threats of the modern world. Not only is this one of the best Gray Man thrillers so far, but will also undoubtedly be one of the most talked about thrillers for 2022. Buckle in for a reading frenzy because the Gray Man is back with a bang!

Full review posted with blurb on: https://www.bestthrillerbooks.com/kashif-hussain/sierra-six-by-mark-greaney

Sierra Six, Mark Greaney's newest Gray Man novel, is set between present day and twelve years earlier when Courtland Gentry joined a CIA special activities team. Gentry, aka The Gray Man aka Violator aka Sierra Six, is on a run-of-the-mill singleton operation when he sees a ghost. Literally. Twelve years earlier, as Golf Sierra's newest member, they eliminated a terrorist leader who was the worst of the worst. And that terrorist has just shown up during a supposedly simple op. And the crap is about to hit the fan.

Greaney deftly jumps between present day and twelve years prior, giving fans of the Gray Man what he went through in joining Golf Sierra and his current op. I do not say this as hyperbole: Sierra Six is the best thing Greaney has written. We see Gentry as never before, and while it isn't an origin story per se, it is the defining moment of who he is today.

I don't believe Greaney served in the the military but you would never know. The action, dialogue and attention to detail is more authentic than anything written today. The Gray Man is hands down my favorite series and to say this is my favorite of the series is no understatement. I actually did something I've never done before: after finishing Sierra Six, I went back and reread the first Gray Man. And I'm glad I did. I cannot recommend Sierra Six enough.

My sincere thanks to Mark Greaney, Berkley Publishing Group, and NetGalley for the privilege of reviewing an advanced copy of Sierra Six.

There may be no better thriller writer in the game right now than Greaney. His writing style, storytelling, and fantastically plausible plots are on a different level. This might be my favorite Gray Man novel and that is saying something. He continues to get better and better each year and frankly, I'm not sure how he does it.

I don't know if Greaney makes up some or all of the military jargon that seems to constitute most of his dialogue, but it sure sounds like the genuine article and isn't that what really matters? The rhythms, the syntax, the endless use of obscure acronyms in the interaction among the characters, all drip authenticity and make you feel like a weekend warrior embedded for the duration with the baddest of the badasses.

I'm generally not a fan of the way Greaney chose to structure this novel -- two entirely separate but related narrative lines taking place twelve years apart and with those two separate stories told in more-or-less alternating chapters -- but in his hands it worked fine. The individual time lines never made the narrative taken as a whole feel strained or artificial.

A great read and a sold piece of storytelling that more than earns its five stars.

When you really enjoy a series and can’t get enough of the protagonist, even when the author is generous enough to write new books annually, the best tale to arrive is an origin story. Especially one that is deftly wrapped up in a current caper with a twisty, racing-the-clock plot. SIERRA SIX is just that book. Author Mark Greaney gifts us with twin tales about the Gray Man, before he earned that moniker; when he was first known as Violator and then as Sierra Six. Before he was a legend, he was a 25 year old and much about the world at large was unknown to him.

Greaney’s skills as a writer include an incredible ability to pace out a hunt/destroy scene and make it come alive with the fear, tension and sheer terror that a thriller demands. He doesn’t just describe the setting, weapons and people involved in the battle; he places the reader right in the middle of it. This is a hard book to put down once begun; it’s just that good. I read it all in one weekend and it was a wild ride, not to be missed. I received my copy from the publisher through NetGalley.