In the 25 years since the biggest museum heist in American history—a theft wherein 13 works worth a total of $500 million today were lifted from the Isabella Stewart Gardner Museum in Boston—authorities have made zero arrests, found zero substantial clues, and recovered zero of the stolen works, which include masterpieces by Vermeer and Rembrandt. Then, on Friday, federal authorities announced that a man who was arrested for trying to sell a gun to an undercover agent is Robert Gentile, an alleged mobster who apparently has strong connections to the 1990 operation that left frames empty of their nearly priceless canvases.