A historic exhibition of 18 works by Caravaggio is drawing crowds in Naples, further cementing the realist master’s reputation as one of the greatest painters of all time. “The reason for the success of this magnificent show has less to do with numbers than with the quality of the works and the period that they document: the last four years of Caravaggio’s life, spent peripatetically outside Rome, where he had made a name for himself before he died at 39 of malaria.”