Priceless masterpieces...Brazen thefts: The true story behind the blank spaces on the museum walls. What kind of person would dare to steal a legendary painting--and who would buy something so instantly recognizable? In recent years, art theft has captured the public imagination more than ever before, spurred by both real life incidents (the snatching of Edvard Munch's well-known masterwork The Scream ) and the glamorous fantasy of such Hollywood...