A dark shadow has fallen over the Rebellion. Othello has been killed and the Mumbai base is in disarray. A single tooth filling from the Enforcer attack provides a clue to a secret laboratory near Japan. Seinshun dispatches Macallan, Tulley, and Anton to London to recruit a mysterious immortal to assist in the infiltration mission. But this immortal has a grudge against Anton and some ancient history will have to be unearthed.