And while Himmler committed suicide following his capture by the Allies, and Heydrich was killed by assassins, Mueller spent the final days of the war in the Fuehrerbunker, pledging allegiance to the regime until the very end. "The end" being something the Soviets were more than willing to provide him, but in the chaos of the war's last days he vanished and was never seen again.
It's possible he was killed in the Battle Of Berlin. In the years after the war, a few Germans said they thought they saw his body after the fighting, but no one was ever sure. In 2013, a researcher claimed that he'd been killed during combat and accidentally buried in, of all possible places, a Jewish cemetery, but no 100 percent conclusive proof was ever provided for this claim either.
Still, this was not a dude you could just shrug your shoulders about. The Allies questioned everyone about his whereabouts. This was made a little more complicated by the fact that his name is the German equivalent of "John Smith." Whilst working for the Nazis, for instance, Mueller had to be referred to as "Gestapo Mueller." But the Allied investigators persisted, chasing up a bunch of bad leads, and still found nothing. His mistress denied seeing him again. The Soviets said that they didn't know where he was. Even the CIA had to refute allegations that they'd captured him; this being an era when they were known to be shipping off Nazis to work at Cape Canaveral.
With so little to go on, it was just about safe to assume he was dead when Adolf Eichmann, an escaped SS officer and colleague of Mueller's, was captured in Argentina in the 1960s. He confessed to his Israeli interrogators that he thought Mueller was alive, and although there wasn't much evidence to support it, it left a weird itch in the back of everyone's mind that has never quite gone away.
So, are you Heinrich Mueller? If you are, could you make yourself known to the nearest authority or postman? It'd really settle everyone's nerves.
Adam Wears is on Twitter and Facebook. He also has a newsletter about depressing history, if you're into that sort of thing.
Also check out 12 Guilty-As-Hell People Who Pretty Much Got Away With It and 7 Famous Companies Who Fucked The World And Got Away With It.
Subscribe to our YouTube channel, and check out If Milk Commercials Were Honest, and other videos you won't see on the site!
Follow us on Facebook, and we'll follow you everywhere.