674 AD. Werburgh, great-niece of the Abbess of Ely, travels by night to save the abbey's treasure under a wayside cross in the kingdom of Lindsey. A cryptic inscription on the back indicates the location of the magnificent gold and garnet treasure. Becoming a family heirloom, the dove resurfaces at different points in history, only to be buried again. Later in the 1930's, a ghost of a family member appears, sparking off an investigation...