From USA TODAY and internationally bestselling author Genevieve Graham comes a gripping World War II novel about two sisters who join the war effort—one as a codebreaker and the other as a pilot—and the secrets that threaten to tear them apart. Perfect for fans of The Rose Code and The Nightingale.Twin sisters Dot and Dash Wilson share many things, and while they are practically inseparable, they are nothing alike. Dot is fascinated by books, puzzles, and Morse code, a langua