The grand finale to a fantastic series. This brings closure not just to Lock and the Shadow team, but to a series full of twists and turns, an empathetic portrayal of military and special forces personnel, raw adventure, and an authentically and viably created ‘alternative’ world. While all tensions and loose ends are neatly dovetailed and sorted in this final book, we still experience the succession of thrills and shocks—such as the race against time to combat a deadly virus—the author skilfully weaves into her narratives. Cleverly and expertly done. I believed in the fantasy world the author has created, and the well-researched and gritty depiction of special forces, and in the characters that populate them. Highly recommended.