An art historian claims to have found an image of the devil in the fluffy clouds of a 13th century fresco by the early Renaissance artist Giotto. The fesco, in the Assisi Bascilica in Italy, depicts the death of St. Francis of Assisi.
The historian describes the image as a "vigorous portait" of a devil's face with two dark horns. She said it has been hiding in plain sight for centuries. [photo]