THE INVITATION An invitation to a treasure hunt, Find the coin, post the location, and enter to win. 312AD, the Roman Empire was tearing itself apart, divided between four emperors. Constantine the Great needed to unify the empire under his control, and set about creating a deception so large it still shapes the world today. Saira Valteiri, disgraced vatican archaeologist has discovered Constantine's confession: A set of clay tablets carved by his own hand. Obscura Veritas, t