This stunning book reveals how a version of the Medusa in private hands has been newly attributed to Caravaggio (1571-1610). The similarity of the work, and its frame, to the better-known version at the Uffizi in Florence attracted the attention of experts. X-rays and new technologies eventually confirmed that this version was the original. Here, the results of historical and technological research are accompanied by superb illustrations and close-ups of the painting, the X-rays, and more, enabling art lovers the opportunity to appreciate this previously neglected work.