Several weeks ago, Chief Inspector Armand Gamache of the Sûreté du Québec and his team uncovered and 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 realized that plot, as horrific as it was, was just the beginning. Perhaps even a deliberate misdirection. One he fell into. Something deeper and darker, more damaging, is planned. Did he in fact arrest the Black Wolf, or are they still out there?