I had really high hopes for this book and while I thought it was good, I found it a disappointing conclusion to an otherwise very strong trilogy. The plot felt VERY slow in this one, and on more than one occasion, I found myself thinking "Okay I understand what the city looks like. What do they do next??" I liked the additional story of the pre-stillness world and the origin of stone eaters, guardians, etc. But there were several times when I just got lost in the complex relationship between magic, obelisks, stone eaters, the moon, etc. I'd have liked the overall story in this book to be a bit more concise, but as a trilogy, I loved the series.