Spies, secret messages, and military intelligence have fascinated readers for centuries but never more than today, when terrorists threaten America and society

"This is the story of the Allied codebreakers puzzling through the most difficult codebreaking problems that ever existed.

In May 1917, William and Elizebeth Friedman were asked by the U.S. Army to begin training officers in cryptanalysis and to decrypt intercepted German diplomatic

Winner of the Neumann Prize for the History of Mathematics "We owe Claude Shannon a lot, and Soni & Goodman’s book takes a big first step in paying that debt.

"Monumental." --New York Times Book Review NEW YORK TIMES BESTSELLER From one of the foremost historians of the period and the acclaimed author of Inferno and C