“Gripping”—and Rich Petrelli’s The Hidden Cipher is exactly that… a relentless chase through ancient secrets, modern power, and the shadows between.

Inspired by real historical mysteries, The Hidden Cipher is a work of fiction. It is not a historical account, and while it uses real locations and historical references as atmospheric backdrops, the narrative itself is entirely imagined.

When a forbidden Templar manuscript resurfaces after seven centuries, cryptologist Dr. Elena Voss is the first to recognize the symbols etched inside—and the deadly warning buried beneath them. What begins as a routine analysis pulls her into a conspiracy protected by silence, blood, and a hidden order determined to reclaim the cipher at any cost.

Readers of Dan Brown, Steve Berry, James Rollins, Simon Toyne, and Raymond Khoury will feel instantly at home in this pulse-pounding thriller that blends historical mystery with relentless modern danger. The Hidden Cipher explodes out of the gate with breakneck pacing, international intrigue, and a mystery carved into the bones of history.

Joined by covert operative Antoine Rousseau and researcher Liam Hayes, Elena follows a hidden lattice of encrypted symbols across Europe—through echoing cathedrals, forgotten monasteries, restricted archives, and the sealed chambers of Templar strongholds. Each revelation pulls them deeper into a silent war that has smoldered for centuries… and every step forward stirs enemies who have killed to keep this truth buried.

Because the cipher doesn’t just rewrite history—
it reveals a truth powerful enough to end the human race.

In this electrifying, globe-spanning thriller, descend into a world of forgotten orders, encrypted manuscripts, and conspiracies guarded for seven hundred years. Until now…