I bought this book because I loved the Night Angel series and knew I could trust the author to deliver. Weeks is one of those authors you can count on to bring a well written novel full of everything there is to love about fantasy. I wasn't thrilled at first with the idea of just what a Prism was but it grew on me as I continued to read the book. I ended up loving the story and the characters as they developed and things progressed. I'm now eagerly awaiting the next Lightbringer book.