A key figure in Hitler's personal life was the physician Dr. Theodor Morell. From 1936 until Hitler's suicide, Morell is always present, and willing to hand out some dubious medications from his personal stash, ensuring Hitlers dependancy.
German U Boat 513, takes 46 of its crew to their deaths and leaves 7 survivors. The final resting place of U 513 and exactly happened to it has remained a mystery, until Vilfredo Schürmann found the submarine off the Brazilian coast.