In 1948, the body of a well-dressed man was found slumped on an Australian beach.
A half-smoked cigarette was resting on his collar, and there was a line from a Persian poem in his pocket - but investigators had no idea who he was.
Theories abounded, including that the person - dubbed Somerton Man - was a spy.
But after more than 70 years, a researcher says he's solved the mystery - Somerton Man was Carl Webb.
And he was not a Russian agent, but rather a Melbourne-born electrical engineer.