I can't believe what a letdown this series ended up being. I loved the first two books, 5 star material. The third book was thin in terms of plot and characterization yet was still a decent read and hinted at some cool things in book 4, so I gave it 3 stars. This latest volume is unbearably dull. I am abandoning it at 39% according to my Kindle. What a disaster after such a fantastic beginning. There was obviously not nearly enough material here to justify four volumes.