• Sierra Six

  • Gray Man, Book 11
  • By: Mark Greaney
  • Narrated by: Jay Snyder
  • Length: 15 hrs and 58 mins
  • 4.8 out of 5 stars (10,688 ratings)

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Sierra Six  By  cover art

Sierra Six

By: Mark Greaney
Narrated by: Jay Snyder
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Publisher's summary

It's been years since the Gray Man's first mission, but the trouble's just getting started in the latest entry in the number one New York Times best-selling series.

Before he was the Gray Man, Court Gentry was Sierra Six, the junior member of a CIA action team.

In their first mission, they took out a terrorist leader, at a terrible price. Years have passed. The Gray Man is on a simple mission when he sees a ghost: the long-dead terrorist, but he's remarkably energetic for a dead man. 

A decade of time hasn't changed the Gray Man. He isn't one to leave a job unfinished or a blood debt unpaid.

©2022 Mark Greaney Books LLC (P)2022 Audible, Inc.

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What listeners say about Sierra Six

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  • 5 out of 5 stars
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    9,153
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Story
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    1,215
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  • 2 Stars
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    5 out of 5 stars
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    5 out of 5 stars

WOW!!! PERFECTION!!!!

Seriously, this latest installment to the Gray Man series is just brilliant. Every time Mark Greaney comes out with a new novel I try not to get my hopes up but inevitably I do. Fortunately for me I am always rewarded with a captivating story that takes hold at the start and doesn’t let go until the end…. And even then it stays with you. I don’t know about anyone else but I generally listen to the Gray Man books more than once.
This book takes place in two time lines. The present and 12 years in the past. Both center around the hunt for a particularly heinous terrorist. 12 years ago it was thought by the CIA that he had been killed. Present day finds Court coming face to face with him while on another job.
This book action packed and moves along at a fast pace. If you get distracted for even a moment you must rewind or you might miss something.
Jay Snyder is one my favorite narrators. His performance is flawless.
This book has my VERY HIGHEST RECOMMENDATION.
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102 people found this helpful

  • Overall
    3 out of 5 stars
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    5 out of 5 stars
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    3 out of 5 stars

Great Conception. Lousy Conclusion.

Love the Gray Man.
Half of Sierra Six is great. However, the other half is not great. The ‘12 years ago’ plot line is fantastic, but the ‘Mumbai’ plot line is unoriginal and trite. The book’s conclusion is lousy — the epitome of lazy writing.
So, half the book is spectacular and half the book is at best just meh. Snyder’s narration is superb, as usual.

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23 people found this helpful

  • Overall
    3 out of 5 stars
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    5 out of 5 stars
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    3 out of 5 stars

“12 Years Ago” Would Have Been A Great Book

Flashbacks are an awful mechanism to tell a story. I listen in short time segments while traveling. I often have to rewind to remember which timeframe I’m listening to. Very distracting.
Either timeframe, now or 12 years ago would have been a great listen…but not both in the same book.
The narration by Jay Snyder is another reason I choose Greaney books. He does a great job as always.

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14 people found this helpful

  • Overall
    3 out of 5 stars
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    4 out of 5 stars
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    3 out of 5 stars

Just okay...

strangely this one didnt do much for me. The writing was good as always, but i didnt care that much about the story and found the flashbacks distracting. Also i hated that court was superman in the past. Always a good read from Snyder.

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14 people found this helpful

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    5 out of 5 stars
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Another OUTSTANDING Gray Man!

The first man through the door … non-stop action throughout, and even better the way Greaney pivots between the present and 12 years ago. I couldn't put it down and am ready for the next one. The BEST book so far in 2022!

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13 people found this helpful

  • Overall
    4 out of 5 stars
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    5 out of 5 stars
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    3 out of 5 stars

Decent

I think this is probably my least favorite one so far. It was entertaining and ok story but the back and forth timeline every couple of chapters just made this book feel like a filler. There was some interesting back story and all but doesn’t feel as well done as the rest of the series. It’s half prequel half fill until the next story. All in all I would still recommend but it’s not an edge of the seat thriller by any means.

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10 people found this helpful

  • Overall
    5 out of 5 stars
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    5 out of 5 stars
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    5 out of 5 stars

Grey, Greyer, Greytest!

If you only listen to one Grey Man story, make it this one. Outstanding from beginning to end, the best yet. Brilliantly crafted !! Totally absorbing. Totally encompassing. Unforgettable! Narration 10/10

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    5 out of 5 stars
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    5 out of 5 stars
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    5 out of 5 stars

A peek behind the curtain

Loved this book. I had always wondered about the things Court went through in his early days of his career. This book is a wonderful look into the events and challenges he went through that made him into the man he is in present day. And the fact this book leaves the series open to yet another entry is so exciting!

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8 people found this helpful

  • Overall
    3 out of 5 stars
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    4 out of 5 stars
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    3 out of 5 stars

PAST & PRESENT

IT PROBABLY JUST ME. I REALLY DIDN'T LIKE THE TIME INTERVALS SWITCHING EVERY CHAPTER FROM 12 YEARS AGO TO PRESENT DAY. I FELT IT BREAKS THE ACTION MOMENTUM :[

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6 people found this helpful

  • Overall
    5 out of 5 stars
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    5 out of 5 stars
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    5 out of 5 stars

Another blockbuster

Sierra Six solidifies Mr. Greaney’s position as one of the best action writers of our generation. I especially love the continued character development for our hero, Court , and the fact that we learned about his beginnings.

Talented voiceover artist and narator Jay Snyder perfectly captures the intensity and urgency of Sierra Six, just like he did with all the other books in this awesome series.
He is the perfect narrator to portray the unstoppable Court Gentry. Jay keeps the listener glued to the Airpods for hours on end. Jay Snyder handles accents very well, he gives different voices to the characters and keeps it easy for the listener to differentiate between them.
With Sierra Six you can feel the intensity of the action and you’ll hold your breath many times during the performance.


Mark Greaney delivers another blockbuster international thriller with Sierra Six and I highly recommend all his novels to those who love unputdownable espionage and action books.
Fans of Tom Clancy, Vince Flynn and Robert Ludlum will appreciate Mr. Greaney’s works tremendously.



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  • myanni
  • 12-08-22

Terrific story

This is the first Gray Man novel I’ve listened to and it was terrific. Great story, great pace and great characters. You do have to suspend belief of what the chap can achieve but, after all, it is supposed to be entertainment, and it certainly is.

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  • Ian Mack
  • 01-05-23

Standalone action fiction at its very best

Mark Greaney creates his Masterpiece in this latest episode of the Sierra Six series, the story sizzles along, beautifully read by Jay Snyder, it grabs your attention from the very start to the nail biting finish. The two time zones in the story telling adds to the suspense.
This may be the 11th book in the Gray Man series but it works extremely well as a standalone thriller.

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  • stuart paterson
  • 02-21-22

Superb

I’ve been waiting for ages for Mark’s latest belter of a story and yet again, he hasn’t let me down. Superbly crafted story that seamlessly knits together plots and characters from previous books.
My only regret is now I’ve finished it, I’ve got more ages to wait for the next one.
Please get typing quickly.

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  • Alden72
  • 09-19-23

Loved it.

Gray man book from start to finish...fast, action, adventure, rage, injusgice, white hat hero...Love it.

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  • Amazon Customer
  • 09-14-23

Another Great Story

A very exciting and gripping listen. I totally enjoyed every chapter and the author continues to produce great plots which are very entertaining. I look forward to the next one.

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  • Mr Andrew J Ballard
  • 09-08-23

Another smashing story

Love the narration !
The character is a true hero and your on his side rooting for him at every stage! Thrilling read!

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  • Richard
  • 09-08-23

One of the best

Definitely worth listening to, the story is totally enthralling and kept me engaged through out, one of the best books so far.

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  • sarah thewlis
  • 07-24-23

Excellent

Back to telling the story in the third person. Much prefer this and what a story.

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    2 out of 5 stars
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  • Mike A
  • 06-20-23

Worst in the series

This was torturous I kept asking myself what happened to the author, it could have been so much better. The only thing good, captivating about this book is the title Sierra six

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    3 out of 5 stars
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  • Felicity
  • 06-13-23

Far too descriptive

Goes into far too much detail for me. It’s so easy to zone out because it gets tedious and boring. I did listen to the end though!

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  • AMANDA
  • 05-12-22

Great book.

Pity the Author also now started to use THE LORDS'S NAME in vain. What is it with the story that you HAVE to use God's Name to give the character "personality"? The previous Greyman novels were perfect without such language, why start using it now?

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  • Marcus
  • 03-15-22

Violator did well

Excellent with a little more history of Violator's past revealed. Can hardly wait for next book.

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  • Amazon Customer
  • 03-11-22

An edge of your seat adventure. great

A wonderful, epic adventure. Mark is an amazing writer. A first class thriller I could enjoy time after time.

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  • Anonymous User
  • 03-06-22

great read

loved it , 2 stories in 1 goog old grey man . need more now.

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  • Glenn
  • 03-02-22

Another awesome book

Congratulations Mark on another outstanding Grey Man novel. What a great character. Hopefully many more missions to come for Court

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  • Jane
  • 03-01-22

Fantastic

Such a great book. A dual storyline that completely entertains. Oh what a great writer of action and storyline you are !!!

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  • Mark
  • 02-20-22

Another Gray Man classic

The worst part about being addicted to the Gray Man books is waiting for the next book release.
Mark Greaney’s writing skills easily place him at the head of this genre and Jay Snyder is the perfect match to bring the characters to life.
Sierra Six is both a powerful and compelling story that will keep you awake late at night right up until the last chapter.

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  • peter
  • 07-10-23

Great book. Really fun story

This book talks to the history of the main protagonist in a really fun and engaging way. An absolute must read of the gray man series.

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    4 out of 5 stars
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  • Anonymous User
  • 01-04-23

Great Backstory

Great backstory for what makes ‘The Grey Man’. Tells of the transition from singleton to Goon Squad ‘6’, links it to present day on the run. Now waiting for the next release.

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  • peter
  • 12-09-22

Great Grey Man addition

I typically despise books that jump back and forth in the timeline but this wasn't one of them. It was a fitting prequel to the grey man series and I enjoyed it. Narration by Jay Snyder is first class and I honestly think it could not have been any better.

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