I wish I had time to walk you through all of the books that I just read, but that would be a bit much; however I am going to talk about The Nightmare King, book 11 in the series.
First, let me start by saying that if you're a series kinds of reader, then Killough-Walden is an author that you need to keep in serious rotation. One of the things that I enjoy about her series is that each book can be read as a stand alone. The min characters story lines are complete, even though there is a cliff hanger that leads you into the next book in the series. From the first book she tells us that there will be 13 Kings and Queens, but trust me when I say that each story is a fresh look at so many of the types of characters that you may come across is the realm of the paranormal. I'm not going to give away any spoilers, but if the Nightmare King as as Killough-Walden has created Him then bring on the Nightmares!!