Zarah Leander was the most popular singing movie star during the Nazi period. Born Zarah Hedberg in Sweden, she came up through the ranks of small-town Swedish vaudeville and operetta to establish herself on the Viennese stage by 1935, appearing in Ralph Benatsky's Axel an der Himmelst++r. UFA studios in Berlin had lost Marlene Dietrich to Hollywood in 1930, and had since then been seeking a suitable replacement. Although not a strong actress, Zarah Leander's looks combined the sultry sensuality of Dietrich with the Nordic iciness of Greta Garbo. Her singing voice was suitable...