There's so much to like about this book, but this is very much a first book. I finished it wishing I had been told more. Not in the sense of "wow I can't wait to pick up the next book" (which I will) but more of a confusion, "is that it?" The magic is so fascinating and I love the concept of parallel worlds, but I'm still so confused about how everything worked. The big confrontation at the end was a little underwhelming, and felt like it was rushing just to finish. However, I just read the blurb for the second book and now I am pumped to learn about the international community of Red London. I'm not a fan of when fantasy only addresses a single city or country, and I desperately want to know more about the rest of the world. Fantasy international relations? Yes please.