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510 pages • first pub 1998 (editions)
ISBN/UID: None
Format: Paperback
Language: English
Publisher: Corgi books
Publication date: 01 February 1998
Description
When the National Security Agency'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 wave...
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
510 pages • first pub 1998 (editions)
ISBN/UID: None
Format: Paperback
Language: English
Publisher: Corgi books
Publication date: 01 February 1998
Description
When the National Security Agency'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 wave...