But when the renowned choir director is murdered, the lock on the monastery's massive wooden door is drawn back to admit Chief Inspector Armand Gamache and Jean-Guy Beauvoir of the Sûreté du Québec. There they discover disquiet beneath the silence, discord in the apparent harmony. One of the brothers, in this life of prayer and contemplation, has been contemplating murder. As the peace of the monastery crumbles, Gamache is forced to confront some of his own demons, as well as those roaming the remote corridors. Before finding the killer, before restoring peace, the Chief must first consider the divine, the human, and the cracks in between