Somewhere out there, in the darkness, a black wolf is feeding. Several weeks ago, Chief Inspector Armand Gamache of the S?ret? du Qu?bec and his team uncovered and stopped a domestic terrorist attack in Montr?al, arresting the person behind it. A man they called the Black Wolf. But their relief is short-lived. In a sickening turn of events, Gamache has realized that plot, as horrific as it was, was just the beginning. Did he in fact arrest the Black Wolf, or are they still out there? Still recovering from wounds received in stopping the first attack, Armand is confined to the village of Three Pines, leading a covert investigation from there. He must be careful not to let the Black Wolf know he has recognized his mistake. In a quiet church basement, he and his senior agents Beauvoir and Lacoste, pore over what little evidence they have. Two notebooks. A few mysterious numbers on a tattered map of Qu?bec. And a phrase repeated by the person they had called the Grey Wolf. A warning... In a dry and parched land where there is no water. Gamache and his small team of supporters realize that for the Black Wolf to have gotten this far, they must have powerful allies, in law enforcement, in industry, in organized crime, in the halls of government. From the apparent peace of his little village, Gamache finds himself playing a lethal game of cat and mouse with an invisible foe who is gathering forces and preparing to strike.