Joining the ranks of Hidden Figures and In the Garden of Beasts, the incredible true story of the greatest codebreaking duo that ever lived, an American woman and her husband who invented the modern science of cryptology together and ...

NATIONAL BESTSELLERNPR Best Book of 2017 “Not all superheroes wear capes, and Elizebeth Smith Friedman should be the subject of a future Wonder Woman movie.” — The New York TimesJoining the ranks of Hidden Figures and In the Ga...