This is a lot like J.R. Ward's BDBH, but Slyvia Day is a much better writer. I was surprised that I liked this as much as I did. After being consumed by the BDBH, it was bit like the reading version of potato chips--I couldn't eat just one, I didn't expect to like this. Strangely though it felt like an echo of that other author's series, I liked this more. I'm not sure why this worked for me, but it did. There was very little world building which was confusing, but this came out after the first full length novel was released so I assume Day thinks that you should already have some background if you are reading this. I got this because it was free, so I haven't read the other. It was mostly just a world already built with me the reader struggling to understand what the heck was going on. I will have to go back and read the first one that was published. The whole premise was a little silly, as most paranormal romances are, but I liked the characters. I wanted to get their full length book in the series book to read the rest of their story, though it appears that it isn't yet published. I may take up this series in earnest from this little tidbit.