![]() ![]() Fletcher has to battle to save the agency she believes in, whilst being betrayed on all sides. ![]() ![]() The NSA is being held hostage - not by guns or bombs, but by a code so ingeniously complex that if released it will cripple U. What she uncovers sends shock waves through the corridors of power. 512 pages When the National Security Agency's invincible code-breaking machine encounters a mysterious code it cannot break, the agency calls in its head cryptographer, Susan Fletcher, a brilliant and beautiful mathematician. Cover design by Hen with photos courtesy of Digital Vision, Getty and Corbis. Fifty-second printing of UK mass market original edition, 2004. Some reading and cover creases, small split to rear cover at top of spine, tiny ink initials to front endpaper, old dealer ink stamp to title, paper edge toned with light foxing to endpapers and edges of reading block. ![]()
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