Review: 
 Protagonists: Aria and Perry have come so far, faced so much on their journey to safety, but their journey into the Still Blue may be their most dangerous and life changing yet. Coming off of her exhausting and depressing journey with Roar and her dangerous rescue mission of those stuck in the Reverie pod. Now very wounded she goes of with Perry, Roar, Brooke, Jupiter, and Soren to go rescue Cinder from Hess and Sable. On this mission she learns more about who she is than she ever has in the series so far. Perry's development is all about how he puts so many others before himself that he doesn't give himself time to reflect on what he's been going through and this book really helps him come to terms with all of the conflicted feelings he's been going through. 
 Romance: Before I get into this section, let me just say how happy I am that the author did not include a love triangle. I mean in the last book with Kirra we got to see an almost love triangle, but at the end of thae day all Kirra's manipulation and flirtation really just helped Perry see that the only girl for him is Aria. Also, I'm glad that Aria's friendship with Roar only stayed a friendship and nothing more because I love those two together as friends and nothing more. So onto Aria and Perry's romance, there is a bit of uncomfortable tension in the beginning though there's tension between everyone in the beginning, but after talking things out a bit they become as strong as ever. I do have to say though that there were moments that I was kind of bored with their romance, it just got to a point where nothing really new could happen in their relationship and so there were just a lot of sweet, but kind of boring moments. As to other relationships, well you didn't hear it from me but Soren may or may not get a crush on a *gasp* "Savage". 
 World-Building: With this being the final installment in this series, of course I had some high expectations, and there were things I wanted to see and questions I wanted answered. I can say with some relief that most of those things I wanted to see were in the book and all the questions I had were answered. Unfortunately there were some very bittersweet moments and worse yet some really, really sad moments tho this conclusion. In the end I was very satisfied with how this world was built, there's so much detail and this book ended up enhancing that world-building one hundred times over. 
 Predictability: Like I said above there were things that I wanted to see, or sad things from the previous installment that I couldn't accept actually happened, and was disappointed to not see or see resolved in this final installment. But... I can't fault the story if it doesn't go the way I want. As to what I could and could not see coming, there were a lot of things that I really couldn't comprehend not happening that actually ended up being real. It was so shocking, and not always for a bad reason. As for what I could see coming, there was surprisingly little. I think part of that is attributed to the fact that the story went by much faster that i had anticipated. 
 Ending: Ah, the ending, not just of this installment but the entire series. The ending was bittersweet, which is sadly a fairly normal mood for this entire book. It shouldn't be a spoiler to say that there is a fair amount of death in this book and so one death, that lacked any actual visual proof of death, I was hoping would be reversed sometime before the end but as I got to the last page I had to face facts that it wouldn't be so. I'm kind of holding out hope for another novella or spin-off but I'm not going to hold by breath. As for the good parts, this was a nearly perfect way to end this fantastic trilogy. 
 Rating: 
 It seems that a lot of dystopian trilogies seem to have very controversial ending that sometimes tend to make certain readers very angry, e.g. Allegiant (which I have successfully still avoided spoilers for so please don't spoil me.), but I really can't see that happening with this book and I have to say that I really loved it.