This is the final book in the Three Dark Crowns quartet, which was originally supposed to be a duology, but money, what are you going to do, oh right, trick a bunch of teens (and adults, coughcough) into buying your book series.
Yeah, sorry all fans of this series and the author (I’m sure you’re lovely) but I hated this. It doubled down on everything I disliked from books one through three (especially three), and downgraded what I liked (the premise, the worldbuilding). It also felt messy as hell and like it didn’t know what story it actually wanted to tell. Basically, this book’s whole thing is going, Oh, you liked that thing? WELL TOO BAD, I’M GOING TO DESTROY IT and Oh, you hate this thing and this other thing? HERE IS MORE OF IT ALWAYS. Oh, and I’m going to MAKE IT QUEEN OF THIS BOOK SERIES.
This series should absolutely have ended at book two.
I originally rated this two stars because I really do like the worldbuilding and the concept, and parts of the series I did find satisfying (mostly in the first two books) but I just am so irritated I can’t even do it. One star.