The Number of Love (The Codebreakers)

The Codebreakers (Book 1)Three years into the Great War, England's greatest asset is their intelligence network -- field agents risking their lives, and codebreakers cracking every German telegram. Margot De Wilde thrives in the environment of Room 40, where she deciphers intercepted messages. Then her world is turned upside down by an unexpected loss, and for the first time in her life numbers aren't enough. Drake Elton returns wounded from the field, followed by an enemy who just won't give up. He's smitten quickly by the intelligent Margot, but can he convince a girl who lives entirely in her mind that sometimes life's answers lie in the heart?