Digital Fortress

Author: Dan Brown
(4 )

This an alternate cover for 9780552151696

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 i…

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Thriller Adventure Mystery Thriller Mystery Action Crime book Suspense Fiction Dan Brown Novels Science Fiction