In 1945, American journalists in Japan scrambled to identify the legendary "Tokyo Rose," an English-speaking, female broadcaster who had performed in Japanese propaganda radio broadcasts during the war. One woman who seemed to fit the bill was Iva Toguri D'Aquino, an American citizen who worked on the famous radio program "Zero Hour." How had Iva become Tokyo Rose? And were her actions treasonous? This is part one of a two part series.