This book was a very nice ending to the Blood of Eden saga. It was about on the same caliber as the second book. 
 I did not like this series at first. I wasn't going to pursue it past the first book. I actually traded my copy of The Immortal Rules away because I disliked it enough that I didn't care about having it in my collection. But during the wait between Angelfall and World After, I decided to read the second book, just because it reminded me a little bit of Angelfall, and I was having withdrawals. And I wanted to know what happened to Kanin. I didn't care about Allison or even Zeke, I just wanted to know what happened to Kanin. 
 So I liked the second book a whole lot better than the first. All the characters that annoyed me so much in the first book had died, so only the tolerable characters were left. There wasn't nearly as much blood, guts, rabids, and gore. The characters were developed better. I was very pleasantly surprised. 
 The third book was much like the second, but with a little more elements from the first. (Meaning the rabids and gore have made a return, but it evens out better than it did in the first book.) There is a way way WAY overused plot device present that annoyed me, and certain characters were a little annoyingly emo, but it wasn't too bad and didn't distract from the story. 
 The ending was well done, and everything came full circle and it ended the only way it could. I was still crying inconsolably in the back seat of the car as I was reading while out on a shopping trip, though. Even though the ending had to happen the way it did for all of the characters to find peace in their own way, I still think there had to be another way to stop the Requiem. But what happened was probably for the best. I'm not dissatisfied with the ending at all, just saddened. But to be so emotionally attached to a character (or characters) is one of the marks of a great book. 
 I'm just going to go back to sobbing in a corner now.