I was actually really disappointed in this series as a whole.
It sets up a great plot idea, and lots of mystery, but then falls flat. The plot doesn’t make sense, like it was written without knowing how it would end, and the author adding in things as he thought of them. Not only are no answers given, but you are actually more confused the closer you get to the end. The first book, Nightmare House, was probably the best with regard to not sharing these same issues, however it also did not live up to expectations and potential. The second book, Mischief, was similar, and fell shorter. But this one, was the worst.
The sum total of this book was a bunch of random half-considered ideas thrown together for no reason. The more I think about it, the less sense it made. The set up was most of the book, and the conclusion was abrupt and poorly done.