Brother Cadfael's Penance is a medieval mystery novel set in the autumn of 1145 by Ellis Peters. It is the last novel in the Cadfael Chronicles, first published in 1994. When a rebellion arises in the south, Cadfael leaves the Shrewsbury Abbey cloister to save two who are dear to him. One is the son he has not yet acknowledged, held prisoner by a disillusioned knight. The novel received strongly positive reviews when it was published, and some noted the increasing sales of books in the series. It was "moving and suspenseful", "one of Cadfael's most moving adventures". Source: Wikipedia (en)