Lethal Gambit (Derek Vesper #9)

Lethal Gambit (Derek Vesper #9) by Jack Mars is out now, published September 12, 2026.

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Lethal Gambit (Derek Vesper #9)

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Lethal Gambit (Derek Vesper #9) Release Date: September 12, 2026

Published

“Thriller writing at its best.”
–Midwest Book Review (Any Means Necessary)
⭐⭐⭐⭐⭐

LETHAL GAMBIT (Book #9) is the ninth book in a gripping new action thriller series from the #1 bestselling and USA Today bestselling author Jack Mars (with over 10,000 five-star reviews). The series begins with LETHAL FORCE (Book #1).

Former Army Ranger and ex-NASCAR driver Derek Vesper is used to high velocity, whether its wheels, wings or skis. Assumed to be KIA in a firefight, Derek, unknown to anyone, uses his unique skills as a secret government operator to work outside the scope of protocol and to embrace the most dangerous—and fraught—of missions….

In LETHAL GAMBIT (Book #9), an assassin escapes Cape Town aboard a radar-invisible luxury yacht, and Derek Vesper’s cutting-edge patrol boat is gaining—until a tropical storm changes everything. Armed with only an experimental eFoil hydrofoil board and his wits, Vesper must navigate storm-tossed waters, evade armed patrols, and infiltrate a fortress island.

The Derek Vesper series delivers pulse-racing thrills and knife-edge suspense that seizes your attention with an iron grip. Featuring spectacular action sequences and mind-blowing twists, this series will propel you through a rollercoaster ride, from dynamite openings to jaw-dropping finales. Ideal for readers who love the works of Daniel Silva, Brad Taylor, and Vince Flynn.

Future books in the series are also available!

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[Average Rating: 4]

Genre: Thriller

Jack Mars

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