One of the most notorious Americans of the twentieth century was a failed Broadway actress turned radio announcer named Mildred Gillars (1900-1988), better known to American GIs as "Axis Sally." Despite the richness of her life story, there has never been a full-length biography of the ambitious, star-struck Ohio girl who evolved into a reviled disseminator of Nazi propaganda. At the outbreak of war in September 1939, Mildred had been living in Germany for five years. Hoping to marry, she chose to remain in the Nazi-run state even as the last Americans departed for home. In 1940, she was...