A Grant Valor Action Thriller

12 books in series
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Maximum Damage Publisher's Summary

From the #1 bestselling and USA Today bestselling author Jack Mars (with over 10,000 five-star reviews) comes a riveting new action thriller series. When the world comes under threat, an elite international team is called in, designed to handle the highest of stakes and led by former Army Ranger Grant Valor.

In Maximum Damage (Book 1), former Army Ranger Grant Valor faces a deadly mission when he is recruited to stop a surgical strike on crucial waterways that can lead to global collapse. As Grant and the team track dangerous adversaries across continents, every move could trigger devastation or avert disaster.

Yet his team, composed of outcasts as willing to bend the rules as he is, is up for any challenge.

The Grant Valor series delivers an explosive and monumental thrill-ride, brimming with twists that will shock and awe you at every turn. With a band of unforgettable characters whose gripping saga will compel you to devour stories deep into the twilight hours, fans of Brad Thor, Tom Clancy, and Vince Flynn are sure to fall in love.

Future books in the series are also available!

©2025 Jack Mars (P)2025 Jack Mars
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Product list

  • Book 1

    Maximum Damage cover art

    • Maximum Damage

    • A Grant Valor Action Thriller, Book 1
    • By: Jack Mars
    • Narrated by: Clint Jones
    • Length: 6 hrs and 51 mins
    • Release date: 19-08-2025
    • Language: English
    • Not rated yet

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  • Book 2

    Maximum Force cover art
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  • Book 3

    Maximum Fury cover art
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  • Book 4

    Maximum Threat cover art
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  • Book 5

    Maximum Peril cover art
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  • Book 6

    Maximum Power cover art
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  • Book 7

    Maximum Impact cover art
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  • Book 8

    Maximum Carnage cover art
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  • Book 9

    Maximum Chaos cover art
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  • Book 10

    Maximum Pressure cover art
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  • Book 11

    Maximum Havoc cover art
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  • Book 12

    Maximum Vengeance cover art
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