BrightArts & CultureUnderneath the Mona Lisa Apparently Lies Three Hidden PortraitsFriends Read FreeSaveA man takes a photograph of The Mona Lisa painting, behind a protective glass, in the Louvre museum in Paris in a Monday April 26, 2004 file photo. (AP Photo/Amel Pain, File) By Zachary Stieber12/8/2015Updated: 12/10/2015Print