The Frozen Protocol - Heart of Atlantis #974246

**Cipher of the Lost World Series – Book 1**

“Some secrets were buried for a reason. This one was buried alive.”
Hidden beneath the ice for millennia, a secret is about to wake up. And it’s not alone.

When elite climber Elena Vance is offered forty million dollars to lead a private expedition into the heart of Antarctica, she knows there’s a catch. A massive thermal anomaly has revealed a structure that shouldn’t exist: a perfect black pyramid, appearing as the glaciers melt.

But the expedition turns into a fight for survival when an avalanche traps the team inside. Deep beneath the permafrost, they discover Aethelgard—a breathtaking subterranean city of the lost Atlantean civilization. It isn’t a ruin. It is active, advanced, and protected by biomechanical Sentinels that view humans as a virus to be purged.

Just as the team is facing certain “erasure,” a shadow military unit breaches the cavern. Leading the charge is the one man Elena never expected to see again: Marcus Thorne. The man she loved. The man who supposedly died in a training accident three years ago.

Now, caught between an ancient civilization’s defense protocols and a global government conspiracy to bury the truth, Elena and Marcus must rekindle their lost trust to escape the ice. But in the world of high-stakes secrets, the truth is more dangerous than the cold—and someone is willing to kill to keep Atlantis a myth.
If you love the relic-hunting adventure of Indiana Jones, the high-tech mysteries of James Rollins, and the sizzling tension of second-chance romance, The Frozen Protocol is your next heart-pounding read.