King's Cage builds upon everything we've seen in the series so far and expands it into a much wider reaching series than I was expecting. The characters have grown and evolved in ways that I have come to adore, especially when it runs counter to the way the plot initially sets it up. The new POV characters were delightful, giving new life to characters I didn't think I would love but absolutely do, and the ending was exactly what I wanted and never thought to hope for.