When Ruth Gilmartin learns the true identity-and the WWII profession-of her aging mother, Sally Gilmartin, at the start of Boyd's elegant ninth novel, Ruth is understandably surprised. Sally, nee Eva Delectorskaya, a Russian emigree living in Paris in 1939, was recruited as a spy by Lucas Romer, the head of a secretive propaganda group called British Security Coordination, to help get America into the war.