The Black Wolf

Several weeks ago, Chief Inspector Armand Gamache of the Sûreté du Québec and his team stopped a domestic terrorist attack in Montréal, 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 realised 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.
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 Québec. And a phrase repeated by the person they had called the Grey Wolf : in a dry and parched land where there is no water. Gamache and his small team of supporters realise that for the Black Wolf to have got this far, they must have powerful allies.
And soon, Gamache finds himself playing a lethal game of cat and mouse with an invisible foe who is gathering forces and preparing to strike.