Gabrielle, the Angel of Karma, isn’t happy about a lot of things that have happened since she came to Earth to learn more about humans. She’s especially not happy that the Book of Barabbadon has fallen into her enemy’s hands, that demons are becoming significantly more powerful, and because of the dark changes in Lucas since the attack on him. And her anger is beginning to show.
Her superior and her brethren—even Lucas—thought she was handling everything pretty well until they learn she wants to go after a human trafficker so she can see him face karma. It’s something she does only when compelled to do so because of a human’s particularly good, or, in this case, heinous acts. But their concerns aren’t from her desire to be more involved with her duties, or even because of the human she wants to see reap what he’s sown with her own eyes. It’s because of whom she wants to use to carry out what she has in mind—a trio of demons called the Sisters. They possess troubling powers, thought to still be strengthening, and were locked away by Gabrielle many years ago. Gabrielle, and those who care for her, know the Sisters are more than a little dangerous even for the Angel of Karma—they also know the Sisters will be looking for vengeance of their own.