Fans of Kate Quinn and Kristina McMorris will love this gripping historical novel based on the true story of the woman who used her codebreaking skills to bring down Prohibition gangsters and WWII Nazis, and who ultimately helped found the present-day NSA.

Grace Smith has never been one to conform to societys expectations. She flees small-town Indiana to seek adventureand finds more than she bargained for when shes hired by an eccentric millionaire to learn codebreaking. Soon shes using those skills to help head the governments fledgling cryptanalysis unit.

During Prohibition, Grace takes up the fight against rumrunnersnot to mention Al Capone himself. And as the country careens from one Great War to another, its Grace who must crack the secrets of foreign governments, catch spies, and derail saboteurs . . . before its too late.

With wry wit and sheer grit, she forges her own path as a codebreaker, wife, mother. Shes spent a lifetime going up against powerful men and winning. But as war rages and the stakes grow impossibly high, Grace faces a truly impossible choice: her family or her country?