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Lethal Force
“Thriller writing at its best.”
--Midwest Book Review (Any Means Necessary)
⭐⭐⭐⭐⭐
LETHAL FORCE (Book #1) is the first 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).
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 FORCE (Book #1), when CIA agent Alexis Frost is compromised and forced to race in the Monaco Grand Prix with explosives rigged to her vehicle, operative Derek Vesper has only one desperate enter the race himself. The world's most glamorous sporting event is about to become a deadly game of cat and mouse, where finishing second means certain death.
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!
“Thriller enthusiasts who relish the precise execution of an international thriller, but who seek the psychological depth and believability of a protagonist who simultaneously fields professional and personal life challenges, will find this a gripping story that's hard to put down.”
--Midwest Book Review, Diane Donovan (regarding Any Means Necessary)
⭐⭐⭐⭐⭐
“One of the best thrillers I have read this year. The plot is intelligent and will keep you hooked from the beginning. The author did a superb job creating a set of characters who are fully developed and very much enjoyable. I can hardly wait for the sequel.”
--Books and Movie Reviews, Roberto Mattos (re Any Means Necessary)
⭐⭐⭐⭐⭐
--Midwest Book Review (Any Means Necessary)
⭐⭐⭐⭐⭐
LETHAL FORCE (Book #1) is the first 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).
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 FORCE (Book #1), when CIA agent Alexis Frost is compromised and forced to race in the Monaco Grand Prix with explosives rigged to her vehicle, operative Derek Vesper has only one desperate enter the race himself. The world's most glamorous sporting event is about to become a deadly game of cat and mouse, where finishing second means certain death.
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!
“Thriller enthusiasts who relish the precise execution of an international thriller, but who seek the psychological depth and believability of a protagonist who simultaneously fields professional and personal life challenges, will find this a gripping story that's hard to put down.”
--Midwest Book Review, Diane Donovan (regarding Any Means Necessary)
⭐⭐⭐⭐⭐
“One of the best thrillers I have read this year. The plot is intelligent and will keep you hooked from the beginning. The author did a superb job creating a set of characters who are fully developed and very much enjoyable. I can hardly wait for the sequel.”
--Books and Movie Reviews, Roberto Mattos (re Any Means Necessary)
⭐⭐⭐⭐⭐
189 pages, Kindle Edition
Published February 13, 2026
About the author
Jack Mars
678 books708 followersJack Mars is author of the bestselling LUKE STONE thriller series, which include the suspense thrillers ANY MEANS NECESSARY (book #1), OATH OF OFFICE (book #2) and SITUATION ROOM (book #3).
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Displaying 1 - 8 of 8 reviews
June 15, 2026
LETHAL FORCE (Book #1) is the first book in a new action thriller series from the #1 bestselling and USA Today bestselling author Jack Mars.
In LETHAL FORCE (Book #1), when CIA agent Alexis Frost is compromised and forced to race in the Monaco Grand Prix with explosives rigged to her vehicle, operative Derek Vesper has only one desperate play: enter the race himself. The world's most glamorous sporting event is about to become a deadly game of cat and mouse, where finishing second means certain death.
The Derek Vesper series delivers a different thrills and okay suspense that seizes your attention with reasonable pace. Featuring great setting around Monaco action sequences and okay twists, the first in the series of a series with Derek Vesper, close to action thrillers from Daniel Silva, Brad Taylor, Vince Flynn, Tom Wood, Kerry J Donovan, Mason Cross, but not as fast paced at these, not a real strong main character, to me anyway.
Not as gripping or tense as many books I read
Three Stars
July 7, 2026
fantastic read
Very fast paced, grit and danger, determination beyond abilities. I loved this book. First one read by this author and I want to read more of the adventures of Genesis.
Very fast paced, grit and danger, determination beyond abilities. I loved this book. First one read by this author and I want to read more of the adventures of Genesis.
July 24, 2026
Jack Mars stories are usually well thought out and easy to read, but this story line around the Monaco Grand Prix was totaly unrealiatic and I don't think thought out at all.I will still read his books in the future.
June 3, 2026
Brilliant
What a fantastic read Jack, as usual the characters that you have created well written! I enjoyed every page and I look forward to reading more!
What a fantastic read Jack, as usual the characters that you have created well written! I enjoyed every page and I look forward to reading more!
June 8, 2026
A readable yarn but a bit too far fetched for my liking, especially the participation in the motor race.
June 20, 2026
I thought that this overall was an okay read. A fast-paced and entertaining enough action story. Needed to suspend belief a bit, especially around the F1 aspect of the story.
July 19, 2026
Unputdownable
A captivating read. A brilliant author with a great way to keep his readers interested, great telling of a great plot.
A captivating read. A brilliant author with a great way to keep his readers interested, great telling of a great plot.
July 7, 2026
Lots of Action.
This book is all action from start to finish. The story line is interesting and the characters are good. Their abilities were hard too believe sometimes. If you like action and good lead characters this book is for you.
This book is all action from start to finish. The story line is interesting and the characters are good. Their abilities were hard too believe sometimes. If you like action and good lead characters this book is for you.
Displaying 1 - 8 of 8 reviews