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Unbreakable is the edge-of-your seat true story of the codebreakers, spies, and navy men who cracked the Nazis' infamous Enigma encryption machine and turned the tide of World War II -- perfect for fans of The Imitation Game. "A thrilling adventure of intrigue and daring worthy of the best James Bond stories." -- James Ponti, New York Times best-selling author of City SpiesAs the Germans waged a brutal war across Europe, details of every Nazi plan, every attack, every troop movement were sent over radio. But to the Allied troops listening in -- and they were always listening -- the crucial messages sounded like gibberish. The communications were encoded with a powerful cipher, making all information utterly inaccessible . . . unless you could unlock the key to the secret code behind the German's powerful Enigma machine.