Watch on SFlix. More than 50 years ago, Nazi scientists conducted experiments to prolong Hitler's life. Joseph Mengele, a Nazi doctor who participated in the experiments, took refuge in Argentina after the war. Argentine writer Carlos de Napoli, who discovered the memorandum in which Mengele described the steps necessary to obtain the "Formula for Eternal Youth," traveled across Argentina and Germany, investigating the Third Reich's sinister experiments and persistent obsession with beauty and youth.