The Library Trilogy has been one of my favorite series over the last couple of years. After the ending of The Book That Broke the World, I was so excited to get this one early. I loved every second of reading this book. That being said, I do think this is the weakest of the three books in the series. The time travel and dimension travel got a little shaky towards the end; for some reason, it just wasn't depicted as clearly as it was in the past two books. There was so much going on that I felt like we didn't get much time to experience all of the characters' personalities as deeply as in the past two books. The incorporation of a real-world timeline was really interesting, and I think the time period and region Lawrence chose spoke to some elements of the current political climate. I liked that a lot. The ending, while it wasn't a perfect happy ending. satisfied me. although I do think it wrapped up a little too quickly.