Again, I'm writing this at the same time I've written the review for The Dream Thieves and Blue Lily, Lily Blue, so they kinda only make sense if you also read them all together. 
 This felt more similar to book #3 in style and plot-advancement. I was pretty pretty happy how with all things went down, probably because my only worry was that Ronan got a happy ending. I'm so happy for him I could cry, to be honest. 
 I also feel that some things ended quite abruptly and open-ended, but I'm not too bothered by it. The only thing I do find weird is how little invested I became for Blue and Gansey in this book. (view spoiler)[Was the kiss underwhelming or what? (hide spoiler)] I also found very weird (view spoiler)[the way Blue reacted to Gansey's death, saying something like "I hate this". What? Ronan and Adam's seemed more appropriate responses. (hide spoiler)] I enjoyed Henry and the way he talks a lot, which put a smile in my face more than once, but (view spoiler)[found the whole scene in the pit quite weird. If I'd been Gansey I would've killed him right there, tbh, and I don't think my response would've been that inappropriate. (hide spoiler)] 
 Anyways, I'm happy with it, I enjoyed it a lot, and if there actually is a new series with Ronan as a MC (was that a joke?) I'll throw my money at it.