My favorite part of this book was the magic system and how it interacted with the spirit world. From spirit faces, masquerades, and "pouches," it was a system that was new to me, and it was fascinating. The author did a great job of bringing this system to life and explaining it. Of the four main characters, there were two I really didn't like, though. Maybe I wasn't supposed to? It kept things interesting, as I still rooted for them when it really came down to it.