Started out strong and ended pretty well, but most of the early second half was a slog.
I thought this was a really good book right up until Radar was saved on the sundial. That is what the entire setup of the book so far had been for, and that is what I cared about. After that, I was struggling to care about what was going on. The world of Empis and all the characters were introduced too late for me to care about them, and the story was pretty cliche.