England has become besieged with foreign entities claiming to be English citizens. Three of them have managed to become members of Parliament. Worse yet, the new Prime Minister plans to remove Xavier from his position as head of Foreign Affairs and slot in a man the new Prime Minister likes a great deal. Unfortunately, the man is a Russian Spy.
Worse yet: Vic's sister, Claire, has been declared healthy, despite being insane, and after marrying her doctor, who declared her sane, a week later she returns to London with the intent to kill everyone she hates, which is anyone associated with Vic. When Claire's husband gets fired, he joins her in London and proves to be the reason she has a killing compulsion. He wasn't making her better all this time. He was making her deadly.