Just because you slay a powerful half-demon, doesn't mean you are free of him.
After a long struggle, Ginny and the Alliance are finally free of the threat of Jacob and his changeling minions. His influence still lingers, though. In whispers and rumors throughout the Alliance and those members who have split from them in their time of need. And in his most devout servant, Marta, who will stop at nothing to bring Jacob back. They know how to travel between Earth and Perdition. And they know just how to stop the angelborn. By removing the angel himself.
Full out war has been declared, and everyone must choose a side in this final showdown.