The Wall Street Journal called him "a living legend." The London Times dubbed him "the most famous art detective in the world."

In Priceless, Robert K. Wittman, the founder of the FBI's Art Crime Team, pulls back the curtain on his remarkable career for the first time, offering a real-life international thriller to rival The Thomas Crown Affair.

Rising from humble roots as the son of an antique dealer, Wittman built a twenty-year career that was nothing short of extraordinary. He went undercover, usually unarmed, to catch art thieves, scammers, and black...