A father and his filmmaker son explore the previously untold Holocaust story of 1, 000 Viennese Jews stranded on the frozen Danube River in 1941 awaiting rescue by Ruth Klieger, a senior age... Read allA father and his filmmaker son explore the previously untold Holocaust story of 1, 000 Viennese Jews stranded on the frozen Danube River in 1941 awaiting rescue by Ruth Klieger, a senior agent of the newly created Mossad.A father and his filmmaker son explore the previously untold Holocaust story of 1, 000 Viennese Jews stranded on the frozen Danube River in 1941 awaiting rescue by Ruth Klieger, a senior agent of the newly created Mossad.