Brother Cadfael, the medieval mystery-solving monk, is a fascinating detective, at once a man of God, of science, and even of action. Derek Jacobi stars as the former "soldier, sailor, sinner, and Crusader" who has his faith tested by crimes of royal intrigue and baffling murders that seem to plague 12th-century Shrewsbury. You'll find few Benedictine monks so skilled at using a quarterstaff, but ...