'Newly Discovered' Caravaggio Declared Fake by Prado Museum / Caravaggio, Baroque's Bad Boy, Gets a Blockbuster Show in Rome / Forgotten Caravaggio Portrait Goes on Public View for the First Time / Caravaggio's rare portrait of Maffeo Barberini unveiled in Rome / Rare Caravaggio portrait, hidden away for decades, goes on show in Rome / Caravaggio's Painting of a Future Pope--Hidden for Years--Is Unveiled in Rome / Caravaggio Painting, Unseen for Decades, Goes on Display / How a 17th-Century Power Struggle Over Caravaggio's Art Anchors a Rare Exhibition in Paris / Caravaggio's 'Martyrdom of St. Ursula': The Decisive Moment / The Hunt: Is Caravaggio's $20 Million Nativity Scene Lost to the Underworld?