Queen of Historical Fiction Kate Quinn's new novel is a World War II story about three cryptographers and a spy they must expose. In 1940, with England already at war with the Nazis, three very different women meet at Bletchley Park Manor, where Britain's best minds work in complete secrecy to decipher German radio messages.

Ozla is a frivolous debutante from high society, twisting an affair with Philip, Prince of Greece, who in a few years will become the husband of the future Queen Elizabeth. Mab is a portly beauty with a difficult life from a working-class London district. And Bette is a quiet mouse from a provincial town, living under the tyrannical heel of a hypocrite mother. They are united by war, unexpected abilities that they did not suspect in themselves, and work that is strange, interesting and very important.

The Code of the Rose is a complex interweaving of military history, love lines, espionage passions, but above all, a stunningly written story of female friendship during the war years.