Title rated 3.65 out of 5 stars, based on 307 ratings(307 ratings)
Book, 2004
Current format, Book, 2004, Available .
Book, 2004
Current format, Book, 2004, Available . Offered in 0 more formats
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, 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…
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