I don't feel like this book really deserves the four stars I'm giving it, because when I step away from it, it doesn't seem objectively all that good. It's all a little outrageous, and the focus of the plot is on events that don't seem too important in the grand scheme of the series. And for all that people praise Schwab's world-building, the multi-world premise is still too unsubstantiated for my taste. 
 But I devoured it anyways. So there.