In London, Department 18 Chief, Simon Crozier, is brutally stabbed and left for dead. Billionaire businessman Pieter Schroeder has laid his first card in a deadly, high-stakes game, a battle that will pit Department 18 against evils both ancient and modern. As the secret past of Department 18 comes back to haunt the present day, the team's futureand Crozier's lifehang in the balance when they confront an enemy who is powerful, malevolentand perhaps immortal.