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), an ultra-secret, multibillion-dollar agency many times more powerful than the CIA. 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.

丹·布朗（Dan Brown）是美國當今最著名的暢銷書作傢之一。他2003年3月齣版的《達·芬奇密碼》創造瞭一個書市奇跡，鏇風般地橫掃瞭美國各大暢銷書榜，連續數十周高居《紐約時報》暢銷書榜首，全球銷量已超過800萬冊。丹·布朗也憑這部小說而大紅大紫。《數字城堡》是丹·布朗的長篇懸念驚悚小說處女作，其創作靈感來自於一個真實的事件。丹·布朗還創作瞭《天使與魔鬼》、《圈套》等小說，可以說本本都很叫座。

譯者硃振武，1963年生，英美文學博士，世界文學博士後。也是《達·芬奇密碼》和《破解》的主要譯者。