The Sacred Stone (Medieval Murderers Group 6)

1067. In the desolate wastes of Greenland, a band of hunters stumble across a strangely shaped object which has fallen from the sky. At first, the mysterious "sky-stone" seems to bring them good luck, healing a lame boy and guaranteeing a good catch of furs. But violence and murder soon follow in fortune's wake as the villagers fight and struggle among themselves to gain control of the precious stone. Over the next 600 years, the Sky-Stone falls into the hands of crusading knights, the wicked Sheriff of Devon, a group of radical young kabbalists, the dying King Henry III, and a band of traveling players.