Whew. That was 963 pages (in the pdf I made of it) of epic post world world III dystopian super spy intrigue. I loved the evolution of Sin and Boyd over the course of the book. At the start I felt there was no way, no matter how much they changed that their characters could have anything resembling a healthy romantic relationship (this is as late 350 pages into the book). It was violent and intriguing and twisty but it was also healing and uplifting and hopeful. My only critique is that often the authors spent too much time "setting the scene" whether in a character's head or in the physical reality. For example one time they spent pages describing this art exhibit with no reference to either of our characters. Then just a few pages later we get to be in both our characters' heads as they go through the exhibit. An editor probably could have cut 300 or so pages from this story and it would have been just as rich. That being said...next time I have a school break (because that is what I need to read something this epic) I will definitely be reading the next book in the series. 4.5 stars rounded to 4.