"In 1944, the war had reached its climax in continental Europe. News of secret diaries kept by Italy's former Foreign Minister, Galeazzo Ciano, had permeated public consciousness. What wasn't reported, however, was how three women-a Fascist's daughter, a German spy, and an American socialite-risked their lives to ensure the diaries would reach the Allied forces, who would use the papers as key evidence against the Nazis at the Nuremberg Trials. Just...