The victim was found dead at 6:30 am, December 1, 1948, under a street lamp at Somerton Beach in Australia. And with that, we have exhausted everything we know about the man. It's the things we don't know that have been baffling authorities ever since. Including the meaning of the apparently uncrackable secret code he left behind.
But more on that in a moment. Things first started to lurch towards the creepy when police noticed that all his clothes' identification marks had been removed. They were eventually and painstakingly able to place a jacket to America, which was strange because his dental records and fingerprints didn't match anyone who'd ever lived there... or anywhere else in the world. It was like the guy had never existed.
So the cops must have been half expecting it when the coroner returned with the cause of death: "Sudden, acute onset of damned if I know." The autopsy revealed exceptional health, a half-digested pasty in his stomach, and congestion in his brain and stomach that would have been consistent with poisoning if, you know, they'd found even a trace of poison anywhere in his body. For good measure, his spleen was three times too big.