Answer
Franz Stangl, the subject of a dossier compiled by Simon Wiesenthal in 1971, gained notoriety as the commandant of the Sobibor and Treblinka extermination camps during World War II. His reputation as an architect of death earned him the nickname "The Executioner of Sobibor." After the war, Stangl eluded capture for over two decades before Wiesenthal's efforts led to his apprehension in Brazil and subsequent trial in Germany.