Thomas Gavin may be one of the most prolific artifact thieves in U.S. history.
There are no movies or books about him, and no wild police chases or Indiana Jones-like adventures. In fact, until a couple of years ago no one even knew who he was.
But Gavin had been on a tear in the '60s and '70s, hitting nearly a dozen museums on the East Coast. He mostly stole antique firearms and stashed them in his hideout — a cluttered, non-descript barn in rural Pennsylvania.