Newly discovered documents reveal how Nazi war criminal Josef Mengele escaped Europe after World War II and lived under various aliases in South America. Mengele, known as the 'Angel of Death' for his cruel experiments at Auschwitz, filed a travel request to West Germany in 1959 using his real name, suggesting confidence in his safety. The documents show that multiple countries had more information on Mengele than previously believed, despite efforts by the German government and Mossad to capture him.