Symbols and hidden messages often discovered in historical paintings -- some credible , others less so . One of the more outlandish theories about this work ( which featured as the central clue in the plot of `` The Da Vinci Code '' ) is that the undulating composition of the disciples ' hands and the bread rolls on the table correspond to musical notes on a stave . Face of the devil recently discovered in a Giotto fresco in a church in Vasari . Art historians believe they have found messages in works by Leonardo and Michelangelo . Forensic art historian hunting lost Michelangelo work based on `` clue '' in Italy fresco , among others .
Symbols and hidden messages often discovered in historical paintings -- some credible , others less so . Face of the devil recently discovered in a Giotto fresco in a church in Vasari . Art historians believe they have found messages in works by Leonardo and Michelangelo . Forensic art historian hunting lost Michelangelo work based on `` clue '' in Italy fresco , among others .