Otto Rahn freezes to death on a mountainside in Tyrol. A medievalist and a Obersturmführer (First Lieutenant) of the SS, Otto Rahn was obsessed with stories about the Cathars and the Holy Grail. He was convinced that Montségur, the final Cathar fortress to fall in the Crusade against them, contained their secrets — and the secret of the Holy Grail.
He found favor with Heinrich Himmler who is also very interested in the occult and ancient secrets — and despite the fact that Otto Rahn was openly homosexual. His death in the mountains is ruled a suicide, though the circumstances surrounding it remain a mystery.
Rumor has it that he was a model for the movie character Indiana Jones, which is ironic given Jones' battles against the Nazis, but neither George Lucas nor Stephen Spielberg have ever commented on who may or may not have inspired the character.