Karen Ralls, Ph.D., medieval historian, international lecturer, and media consultant, was postdoctoral fellow at the University of Edinburgh for six years before continuing her specialist medieval research at Oxford. A member of the Oxford University Religious Studies Society, the American Academy of Religion (AAR), and the British Association for the Study of Religion (BASR). Dr. Ralls was also former deputy director of the Rosslyn Chapel Museum exhibition (1996-2001). Originally from the United States, she has frequently appeared on the History Channel and the Discovery Channel, and in Natio...