Digital Fortress

Before the multi-million, runaway bestseller The Da Vinci Code, Dan Brown set his razor-sharp research and storytelling skills on the most powerful intelligence organization on earth--the National Security Agency (NSA)--in this thrilling novel, Digital Fortress.
When the NSA's invincible code-breaking machine encounters a mysterious code it cannot break, the agency calls its head cryptographer, Susan Fletcher, a brilliant and beautiful mathematician. What she uncovers sends shock waves through the corridors of power. The NSA is being held hostage...not by guns or bombs, but by a code so ingeniously complex that if released it would cripple U.S. intelligence.
Caught in an accelerating tempest of secrecy and lies, Susan Fletcher battles to save the agency she believes in. Betrayed on all sides, she finds herself fighting not only for her country but for her life, and in the end, for the life of the man she loves.
From the underground hallways of power to the skyscrapers of Tokyo to the towering cathedrals of Spain, a desperate race unfolds. It is a battle for survival--a crucial bid to destroy a creation of inconceivable genius...an impregnable code-writing formula that threatens to obliterate the post-cold war balance of power. Forever.

Dan Brown is the author of numerous #1 bestselling novels, including Digital Fortress, Angels & Demons and The Da Vinci Code, which has sold more than 80 million copies worldwide, making it one of the best selling novels of all time. Named one of the World's 100 Most Influential People by TIME Magazine, he has appeared in the pages of Newsweek, Forbes, People, GQ, The New Yorker, and others. His novels are published in 51 languages around the world. He is a graduate of Amherst College and Phillips Exeter Academy, where he also taught English. Digital Fortress was inspired by his experiences at the academy. He lives in New England with his wife.