A new beautiful enemy appears on the scene, saving Jack's life, and he wonders why. Does she just enjoy killing vampires, or does she want something from him? His suspicions grow when he learns she was friends with Silver years ago. Isobel continues to pop up, causing trouble for everyone. Then things get crazy, and Jack remembers his past. Can he and Silver survive what's coming?

This is the second book in the Rule Series. These books should be read in order. Start with Vampires Rule.