Skip to Main Content (Press Enter)

Sierra Six

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

By Mark Greaney
On Tour

Best Seller

Part of Gray Man

Part of Gray Man

Part of Gray Man

Part of Gray Man

Part of Gray Man

Paperback $17.00

Aug 09, 2022 | ISBN 9780593099018

Mass Market Paperback $9.99

Nov 29, 2022 | ISBN 9780593099025

Large Print $30.00

Mar 15, 2022 | ISBN 9780593556375

Hardcover $28.00

Feb 15, 2022 | ISBN 9780593098998

Ebook $9.99

Feb 15, 2022 | ISBN 9780593099001

All Formats
+
    Sierra Six by Mark Greaney
    Paperback $17.00
    Aug 09, 2022 | ISBN 9780593099018

    Buy from Other Retailers:

    See All Formats (4) +

    Paperback (3)
    –

    • Paperback $17.00

      Aug 09, 2022 | ISBN 9780593099018

      Buy from Other Retailers:

    • Mass Market Paperback $9.99

      Nov 29, 2022 | ISBN 9780593099025

      Buy from Other Retailers:

    • Large Print $30.00

      Mar 15, 2022 | ISBN 9780593556375

      Buy from Other Retailers:

    Hardcover
    +

    • Hardcover $28.00

      Feb 15, 2022 | ISBN 9780593098998

      Buy from Other Retailers:

    Ebook
    +

    • Ebook

      Feb 15, 2022 | ISBN 9780593099001

      Buy from Other Retailers:

    Buy the Ebook:

    About Sierra Six

    It’s been years since the Gray Man’s first mission, but the trouble’s just getting started in the latest entry in the #1 New York Times bestselling 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.

    About Sierra Six

    It’s been years since the Gray Man’s first mission, but the trouble’s just getting started in the latest entry in the #1 New York Times bestselling 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.

    About Sierra Six

    It’s been years since the Gray Man’s first mission, but the trouble’s just getting started in the latest entry in the #1 New York Times bestselling 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— the life of a woman Court cared for. 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 may have passed but the Gray Man hasn’t changed. He isn’t one to leave a job unfinished or a blood debt unpaid. 

    About Sierra Six

    It’s been years since the Gray Man’s first mission, but the trouble’s just getting started in the latest entry in the #1 New York Times bestselling 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.

    About Sierra Six

    It’s been years since the Gray Man’s first mission, but the trouble’s just getting started in the latest entry in the #1 New York Times bestselling 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.

    Read An Excerpt

    Read An Excerpt

    Read An Excerpt

    Read An Excerpt

    Also in Gray Man

    Burner
    The Gray Man (Netflix Movie Tie-In)
    See All

    Also in Gray Man

    Burner
    The Gray Man (Netflix Movie Tie-In)
    See All

    Also in Gray Man

    Burner
    The Gray Man (Netflix Movie Tie-In)
    See All

    Also in Gray Man

    Burner
    The Gray Man (Netflix Movie Tie-In)
    See All

    Also in Gray Man

    Burner
    The Gray Man (Netflix Movie Tie-In)
    See All

    Also by Mark Greaney

    Armored
    Mark Greaney's Gray Man Series: Books 1-3
    Relentless
    One Minute Out
    Red Metal
    See all books by Mark Greaney

    Also by Mark Greaney

    Armored
    Mark Greaney's Gray Man Series: Books 1-3
    Relentless
    One Minute Out
    Red Metal
    See all books by Mark Greaney

    Also by Mark Greaney

    Armored
    Mark Greaney's Gray Man Series: Books 1-3
    Relentless
    One Minute Out
    Red Metal
    See all books by Mark Greaney

    Also by Mark Greaney

    Armored
    Mark Greaney's Gray Man Series: Books 1-3
    Relentless
    One Minute Out
    Red Metal
    See all books by Mark Greaney

    Also by Mark Greaney

    Armored
    Mark Greaney's Gray Man Series: Books 1-3
    Relentless
    One Minute Out
    Red Metal
    See all books by Mark Greaney

    About Mark Greaney

    Mark Greaney has a degree in international relations and political science. In his research for the Gray Man novels, including Agent in Place, Gunmetal Gray, Back Blast, Dead Eye, Ballistic, On Target, and The Gray Man, he traveled to more… More about Mark Greaney

    About Mark Greaney

    Mark Greaney has a degree in international relations and political science. In his research for the Gray Man novels, including Agent in Place, Gunmetal Gray, Back Blast, Dead Eye, Ballistic, On Target, and The Gray Man, he traveled to more… More about Mark Greaney

    About Mark Greaney

    Mark Greaney has a degree in international relations and political science. In his research for the Gray Man novels, including Agent in Place, Gunmetal Gray, Back Blast, Dead Eye, Ballistic, On Target, and The Gray Man, he traveled to more… More about Mark Greaney

    About Mark Greaney

    Mark Greaney has a degree in international relations and political science. In his research for the Gray Man novels, including Agent in Place, Gunmetal Gray, Back Blast, Dead Eye, Ballistic, On Target, and The Gray Man, he traveled to more… More about Mark Greaney

    About Mark Greaney

    Mark Greaney has a degree in international relations and political science. In his research for the Gray Man novels, including Agent in Place, Gunmetal Gray, Back Blast, Dead Eye, Ballistic, On Target, and The Gray Man, he traveled to more… More about Mark Greaney

    Product Details

    Category: Espionage Mysteries | Suspense & Thriller

    Paperback | $17.00
    Published by Berkley
    Aug 09, 2022 | 528 Pages | 5-5/16 x 8 | ISBN 9780593099018

    Category: Espionage Mysteries | Suspense & Thriller

    Mass Market Paperback | $9.99
    Published by Berkley
    Nov 29, 2022 | 736 Pages | 4-3/16 x 7-1/2 | ISBN 9780593099025

    Category: Espionage Mysteries | Suspense & Thriller

    Large Print | $30.00
    Published by Random House Large Print
    Mar 15, 2022 | 784 Pages | 6-1/8 x 9-1/4 | ISBN 9780593556375

    Category: Espionage Mysteries | Suspense & Thriller

    Hardcover | $28.00
    Published by Berkley
    Feb 15, 2022 | 528 Pages | 6 x 9 | ISBN 9780593098998

    Category: Espionage Mysteries | Suspense & Thriller

    Ebook | $9.99
    Published by Berkley
    Feb 15, 2022 | 528 Pages | ISBN 9780593099001
    YOU MAY ALSO LIKE

    Praise

    “Sharp, cinematic, and packed with action—the Gray Man novels blow all other thrillers away!”
    —Brad Thor, #1 New York Times bestselling author of Black Ice

    “So many bad guys, so little time….Over-the-top thrills. Greaney never disappoints.”
    —Kirkus Reviews

    “Excellent….Greaney seamlessly adjusts focus between the timelines, jumping from one exhilarating roller-coaster ride to the other. Spy and military thriller fans will be well pleased.”
    —Publishers Weekly (starred review)

    “Greaney hit absolute literary gold with his Gray Man series…and Sierra Six is no exception!”
    —Mystery & Suspense magazine

    Looking for More Great Reads?
    21 Books You’ve Been Meaning to Read
    Get the latest updates about Mark Greaney
    And go from well-read to best read with book recs, deals and more in your inbox every week.
    And go from well-read to best read with book recs, deals and more in your inbox every week.
    By clicking SIGN UP, I acknowledge that I have read and agree to Penguin Random House’s Privacy Policy and Terms of Use and understand that Penguin Random House collects certain categories of personal information for the purposes listed in that policy, discloses, sells, or shares certain personal information and retains personal information in accordance with the policy. You can opt-out of the sale or sharing of personal information anytime.
    Dismiss
    Thanks!
    Something awesome is on its way.
    Back to Top

    Visit other sites in the Penguin Random House Network

    Raise kids who love to read

    Raise kids who love to read

    Today's Top Books

    Want to know what people are actually reading right now?

     An online magazine for today’s home cook

    An online magazine for today’s home cook