This series is keeping me entertained by its ingenuity, furious pace, and versatility from one book to the next. I just finished book 5, Princep's Fury, and I still don't know where this story is going. At the end of every book in this series I thought I could tell where the author was taking the reader, only to be surprised time and again but the turn of events. Everyone is a potential enemy, or a potemtial ally. Most characters are shades of grey and you can hate somneone is one book and find yourself liking them in the next one. Some characters are infuriatingly hopeless (Invidia) while others are surprisingly hopeful (Fidelias), and there is simply to telling how it will all end. Bits of the past are being revealed throughout, which makes things even more interesting/confusing.
It has been a very long time since a series has held me hooked like this one has. Another great read from Jim Butcher!