The NSA’s greatest weapon is its code-breaking machine—until it meets a code it can’t crack.
Susan Fletcher, the NSA’s top cryptographer, is called in to solve the mystery. What she finds is a threat unlike any other: an unbreakable algorithm that could cripple U.S. intelligence and expose every secret the government holds.
Caught in a deadly web of betrayal, Susan races against time to uncover who created the code—and stop them before it’s unleashed. But the deeper she digs, the more personal—and dangerous—the stakes become.
From the secret corridors of the NSA to the cathedrals of Spain and the streets of Tokyo, Digital Fortress is a global race for survival.
Before The Da Vinci Code, Dan Brown delivered this explosive thriller where the most powerful weapon is information.