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  • 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 (293 ratings)

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Sierra Six 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.

What listeners say about Sierra Six

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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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2 people found this helpful

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

Violator did well

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

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1 person found this helpful

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    5 out of 5 stars
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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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1 person found this helpful

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    5 out of 5 stars
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great read

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

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1 person found this helpful

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    5 out of 5 stars
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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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1 person found this helpful

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    5 out of 5 stars
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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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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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Great read -as always

I thought I wouldn’t like the jump back in time and the two story lines but it was fine. As always a riveting read!

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

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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