Gamache returns to investigate the disappearance of a popular resident but it soon becomes a murder case. Meanwhile, Lacoste discovers a key piece of evidence has been faked, and with Gamache's encouragement secretly reopens the case.
Gamache returns to Three Pines to investigate the disappearance of the popular resident Marc Fortier but it soon becomes a murder case that leads Gamache and his team into the heart of the village's dark past at St Anthony's. Meanwhile, Lacoste discovers a key piece of evidence relating to Blue's disappearance has been faked, and with Gamache's encouragement secretly reopens the case.