Paul Marcus

The Paul Marcus thriller series follows a former CIA cryptographer considered the world’s best code-breaker—capable of cracking everything from ancient ciphers to modern digital encryption. After uncovering a secret international cabal known as the Circle of Thirteen, Marcus is drawn into deadly puzzles hidden in the writings of Isaac Newton, Thomas Jefferson, and Sun Tzu—codes that predict future events and threaten global catastrophe. Smart, fast-paced, and steeped in history, these thrillers explore how hidden knowledge can shape destiny—and how dangerous truth can be when revealed.

Destiny

From the series: Paul Marcus

When former CIA cryptographer Paul Marcus receives a call asking him to analyze papers locked in an old trunk, he thinks it's a hoax. But the manuscripts are real—the final writings of Isaac Newton, hidden for centuries.

Using Newton's math and notes, Marcus begins to see a pattern leading to a prophecy so terrifying that revealing it will change...

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The Jefferson Prophecy (Paul Marcus - trilogy Book 2)

From the series: Paul Marcus

An encrypted letter written by Thomas Jefferson is discovered hidden in the attic of an old Virginia farmhouse. The contents could reveal who killed a U.S. Special Forces soldier—225 years after Jefferson penned the message.

Former CIA cryptographer Paul Marcus, who five years earlier cracked an encrypted paper written by Isaac Newton, is called...

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The Poppy Score: A Paul Marcus Thriller

From the series: Paul Marcus

Former CIA cryptographer Paul Marcus is living quietly with his family in the mountains of Montana when an unscheduled visit shatters his isolation. He’s asked to decrypt seven ancient pages written more than 2,500 years ago by Sun Tzu, author of The Art of War—pages long believed lost and never meant for Western eyes.

The encrypted text may be...

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