Expatriates posing as detached yet patriotic American commentators, and using the "news-of-the-day" voice of the stereotypical radio announcer, sought to turn U.S. opinion against the British and achieve the political objectives of their media-savvy employer--master propagandist Paul Josef Goebbels. Riveting biographies in Berlin Calling put real names and faces behind the voices of "The Georgia Peach," "Mr. O.K.," "Paul Revere," and others. Were they motivated by antipathy towards New Deal programs or were they simply hucksters in search of a payroll check? Ten years on historical research have culminated in a landmark book with intriguing answers to these puzzling questions.