S1, E5: Kommandant Franz Stangl was one of the Nazi figureheads behind the Jewish death camps. Not until the 1960s did Simon Wiesenthal - the most famous Nazi Hunter and a concentration camp survivor himself - receive a tip off from an ex-Gestapo officer that led him to Brazil. With a Brazilian Senator acting as go-between, Wiesenthal discreetly prepared his evidence. Finally, Stangl was arrested, deported and sentenced to life imprisonment. Bringing Stangl to justice was one of Wiesenthal's greatest successes, fulfilling his goal of honouring the millions of Jews who did not survive.