Overview: The restoration of Leonardo da Vinci’s famous masterpiece, The Last Supper, produced results some call glorious and others call tragic. Da Vinci’s famously fragile fresco was always going to be a challenge for its secretive Italian restorers. No one, however, could have foreseen how problematic and strange their task would become. Marked by a series of extraordinary mishaps, mistakes, and miscalculations, the incredible restoration is hilarious to watch but may have resulted in the loss of a masterpiece.