For eighty years, a secret buried beneath the ruins of an ancient world has remained hidden.
In 1938, an expedition sponsored by the Nazi Ahnenerbe descended into Mesopotamia searching for evidence of a civilization they believed possessed knowledge beyond anything the modern world understood. What they found disappeared into the chaos of war—and was eventually written off as lost forever.
It wasn’t.
When mathematician and historian Kurt Lentz is confronted with a mysterious bronze cylinder recovered from an unindexed European archive, he recognizes something no conventional scholar has been able to see. The strange markings covering its surface are not a forgotten language. They are mathematics—an intricate geometric system encoded into bronze thousands of years ago.
And the mathematics are connected to Kurt’s own work.
Drawn into the mystery by Dr. Ilona Szabó, Kurt follows a trail that reaches from ancient Mesopotamia through the darkest archives of Nazi Germany and into the hidden chambers beneath modern Europe. But they are not the only ones searching.
A ruthless organization has been waiting decades for the cylinder to resurface. They know what it can do. They know where the ancient system leads. And they will kill to recover it.
As Kurt and Ilona race across Europe, fragments of a forgotten cipher begin to reveal a terrifying possibility: the ancient builders were not preserving information.
They were constructing a mechanism.
One designed to respond to the person attempting to unlock it.
The closer Kurt comes to understanding the cylinder, the more dangerous the pursuit becomes. His own extraordinary ability to recognize patterns may be the key to solving the mystery—or the very thing that makes him its next victim.
From the libraries and archives of Europe to the buried ruins of the ancient world, The Devil’s Cipher is a historical mystery of mathematics, obsession, and forbidden knowledge.
Some secrets were hidden because they were never meant to be found.
And some doors were sealed for a reason.
