In the race to save one of their own, Sigma Force must wrestle with the deepest spiritual mysteries of mankind in this mind-expanding adventure from the #1 New York Times bestselling author, told with his trademark blend of cutting edge science, historical mystery and pulse-pounding action.
Arriving home on Christmas Eve, Commander Gray Pierce discovers his house ransacked, his pregnant lover missing, and his best friend’s wife, Kat, unconscious on the kitchen floor. With no shred of evidence to follow, his one hope to find the woman he loves and his unborn child is Kat, the only witness to what happened. But the injured woman is in a semi-comatose state and cannot speak — until a brilliant neurologist offers a radical approach to “unlock” her mind long enough to ask a few questions.
What Pierce learns from Kat sets Sigma Force on a frantic quest for answers that are connected to mysteries reaching back to the Spanish Inquisition and to one of the most reviled and blood-soaked books in human history — a Medieval text known as the Malleus Maleficarum, the Hammer of Witches. What they uncover hidden deep in the past will reveal a frightening truth in the present and a future on the brink of annihilation, and force them to confront the ultimate question: What does it mean to have a soul?
The series
The Sigma Force series is a heart-pounding blend of military thrillers, historical mysteries, and action-packed adventures that have captivated readers worldwide. Created by bestselling author James Rollins, this series has earned critical acclaim for its fast-paced plots, complex characters, and its masterful combination of real-world history and thrilling fictional narratives. Perfect for fans of gripping espionage thrillers, action-packed sagas, and puzzle-filled mysteries, Sigma Force offers an unforgettable reading experience.
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At the heart of the series is Sigma Force, an elite covert military unit tasked with solving the world’s most dangerous and mind-bending crises. Comprised of brilliant scientists, former military operatives, and world-class experts, Sigma Force operates in the shadows, preventing global catastrophes before they occur. The series follows the team as they battle dangerous enemies, unravel long-forgotten secrets, and uncover hidden truths buried deep in history. Each novel offers a thrilling ride, blending ancient conspiracies, cutting-edge science, and high-octane action that will keep readers on the edge of their seats.
With a unique ability to seamlessly incorporate real-world historical events, ancient artifacts, and scientific advancements into gripping plots, Sigma Force is more than just an action series—it’s an intellectual adventure. From ancient civilizations to advanced technologies, each book in the series offers a deeper exploration of the world around us, weaving together historical intrigue and modern-day stakes. Whether the team is racing against time to prevent a global disaster or unraveling an ancient puzzle, their dynamic personalities and high-stakes missions make every story a compelling read.
The Sigma Force series has garnered a loyal fan base and widespread acclaim for its intricate plots, smart writing, and attention to detail. Each installment combines elements of suspense, historical fiction, and cutting-edge science into a thrilling narrative that stands out in the genre. Fans of action-adventure novels, spy thrillers, and historical mysteries will find themselves absorbed in this bestselling saga, where every twist and turn heightens the stakes.
A must-read for anyone who loves high-energy thrillers, historical puzzles, and global conspiracy narratives, Sigma Force delivers a unique and captivating blend of adventure and intellect. If you’re looking for a series that combines complex characters with world-changing missions and edge-of-your-seat suspense, this series is sure to keep you hooked from start to finish.
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#16 · 2021Kingdom of Bones 
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