In a world where werewolves still roam and sorcery is illegal, policing in 19th-century France is complicated. When a Notaire with a reputation for financial wizardry goes missing Inspector Bassé suspects fraud, and that the gentleman has simply absconded with his client's funds. However, as the inspector digs deeper, he finds blood and money are closer bedfellows. As the enquiry continues, a tight-knit group of boys, the clerks the Notaire left behind, unravels in spectacular fashion.