I just finished this amazing book last week.
It started right where California Demons ended, and not only did I have all my questions answered, I got another surprise and teary ending. Not teary as in so sad you shouldn’t read it. Oh no! Teary as in it’s so damn good I can’t wait until the next book. Which just so happens to have been released this summer. And of course there are 3 holds on it at the library. I’m number four. 
I expect the next one to be just as amazing as the first three. Waiting for a fourth will be torture however. The good thing about reading a series some years after they’re published is no waiting between sequels.
Ms. Kenner created a fabulous premise about a soccer mom/demon hunter–Buffy all grown up. As a writer, I am purely envious. As a reader, I am excited and thrilled. She deserves huge kudos for this series!! 