Book
The Rose Code
by Kate Quinn
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In 1940, socialite Osla, working-class Mab and sheltered Beth are recruited into the secret world of Bletchley Park. Their different talents place them in translation, machine work and codebreaking while friendship offers a temporary refuge from the pressure of wartime secrecy.
By 1947 the women are estranged, and one is confined after being accused of instability and betrayal. A coded message forces them to reconsider what happened at Bletchley and identify the person who used official secrecy to conceal treason.