From the #1 New York Times bestselling master of international intrigue comes a shocking new stand-alone thriller that thrusts a group of university students, falsely accused of murder, into a treacherous hunt across Europe, all to unlock the secrets buried within a centuries-old book that could change humankind forever.

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Knowledge can be magic—until it falls into the wrong hands.

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The ritualistic murder of a British professor at the University of Exeter points to a startling cast of suspects: his own students. All are enrolled in a postgraduate program covering the history of witchcraft, folklore, and spiritualism.

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All evidence points to Sharyn Karr—an American student. Prior to the professor’s death, he had thrust a centuries-old book upon her. It appears to be the handwritten and encrypted diary of an eighteenth-century mystic and occultist, the Comte de Saint-Germain. The professor begged her to keep the text safe, ending with a warning: Trust no one.

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Such a responsibility forces her into cooperation with Duncan Maxwell, a fellow postgrad and the sixteenth in line to the British Crown. Already, Duncan has proven himself a savant with encryptions. Unfortunately, the pair clash at every level, but they both need one another. Especially when they discover the book’s opening words: Herein lies the secret to my immortality. Come find me, if you dare.

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As dark forces close upon the pair, she and her friends are forced to flee, pursued by law enforcement and hunted by a powerful cabal. In an explosive chase across Europe—from the Tower of London to Parisian chateaus to a fortress in the Italian Alps—Sharyn must learn the true secret hidden in Saint-Germain’s text. It will send her and the others across history and deep into the heart of one of the world’s greatest mysteries, a secret buried at the roots of Western Civilization, a discovery that could topple empires and change humanity forever.

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For what lies at the end of Saint-Germain’s diary is as shocking as its opening words.