James S.A. Corey’s Leviathan Falls is the ninth, and final, book in The Expanse series. If you’re reading the series, you’re already going to read this; if you’re not, you only have one question: Do they stick the landing?
Yes. Yes, they do.
The core of this series has always been that it’s telling a story about grand cosmic phenomena at the same time as it’s telling a grubby story of human politics and conflict and whatever else. And the finale really works in not only tying up both of those strands, but in tying them together—it doesn’t feel like two stories going on side-by-side, it feels like it’s all one big unified thing, in a way that’s genuinely surprising for a series of this length.
I’m not going to say much more, because just about anything you say about the ninth volume of a series is a spoiler for the previous eight, and you shouldn’t be spoiled for this series. This is an excellent book, and The Expanse is maybe the single best work of science fiction published in this millennium. Highly recommended.