In the autumn of 1140 the Benedictine monastery at Shrewsbury finds its new novice Meriet Aspley a bit disturbing. The younger son of a prominent family, Meriet is meek and biddable by day, but his sleep is rife with nightmares so violent that they earn him the name of Devil's Novice . Shunned by the other monks, Aspley attracts the concern of Brother Cadfael. Then a body appears, that of a young priest last seen at the Aspley estate. Can Meriet be involved in the death? As events take a sinister turn, it falls to Brother Cadfael to detect the truth.