Political conflict, grand passions and epic ambition fuel this sweeping miniseries set in 12th-century England that centers on the struggles of Prior Philip (Matthew Macfadyen), who's devoted to seeing the construction of Kingsbridge Cathedral. At the same time, civil war is roiling Britain as the result of a struggle for succession among King Henry's heirs, with the outcome of history hinging on a portentous secret. Ian McShane also stars.