"In a secret meeting in 1981, a master thief named Louis Royce gave career gangster Ralph Rossetti the tip of a lifetime. As a kid, Royce had visited the Isabella Stewart Gardner Museum and made a habit of sneaking in at night to find a good place to sleep. He knew the Museum's security was lax, and he gave this information to a boss of the Boston criminal underworld. It took years before the Museum was hit. But when it finally happened, it quickly...

Two thieves posing as Boston Police officers gain entry to the Isabella Stewart Gardner Museum. Once inside, they steal thirteen pieces of art, including several rare Rembrandts. Eighty-one minutes later, these men walk off with $500 million worth of art. This heist is the single largest private property theft in the United States--and despite decades of investigation and dozens of false leads, the case remains unsolved to this day.