In the three weeks since the Louvre museum heist, as investigators sought to find out who was behind it and why the French crown jewels had been so easy to steal, another mystery remained: who the "fedora man" was.
The dapper youth in a hat was photographed outside the museum that Sunday and went viral on social media, prompting theories about his identity.
The first two mysteries were swiftly settled. The thieves' carelessness with DNA allowed police to work out their identities. The Louvre director admitted CCTV security was inadequate.
However, the fedora man remained an enigma - until now.
The dandy, it turns out, is a local teenage fan of Sherlock Holmes and Hercule Poirot who just happened to be at a real crime scene.
