When a peaceful monastery in Québec is shattered by the murder of their renowned choir director, Chief Inspector Armand Gamache and Jean-Guy Beauvoir of the Sãurete du Québec are challenged to find the killer in a cloistered community that has taken a vow of silence.

"We shall all, in the end, be led to where we belong. We shall all, in the end, find our way home. In a time of war, a mysterious child appears at the monastery of the Order of the Chronicles of Sorrowing. Gentle Brother Edik finds the girl, Beatryce, curled in a stall, wracked with fever, coated in dirt and blood, and holding fast to the ear of Answelica the goat. As the monk nurses Beatryce to health, he uncovers her dangerous secret, one that imperils...

In 1943, 14-year-old Massimo, rescued by a mysterious man called Pietro Houdini who preserves the treasures within the Benedictine abbey's wall, accompanies him on a World War II art-heist adventure where they lie, cheat, steal, fight, kill and sin to survive, while smuggling Renaissance masterpieces they've rescued from the "safe keeping" of the Germans.