On the trail of a Nazi war criminal

In 1949 the notorious Nazi doctor Josef Mengele, known as the “Angel of Death” fled to South America. Three decades later, US lawyer Gerald Posner set out to track him down. What followed was a remarkable tale of dogged persistence and lucky breakthroughs, as Posner’s search brought him face to face with Nazi operatives and members of Mengele’s family. Matt Elton caught up with Gerald to find out more about his hunt for the notorious fugitive.