Warning: THERE MAY BE SPOILERS! 
 First let me just say, I really wanted to love this book! I had loved Delirium and enjoyed Pandemonium. Of course the main reason for my love of these books was the relationship between Alex and Lena. I felt so connected to them during Delirium. At the end of Delirium we all knew that there was no way that Alex could be dead. Their love just couldn't end that way. The friendship between Lena and Hana was also a high point! Seeing these two girls with so many differences and how they interacted was interesting. 
 Then came Pandemonium and the whole time i was waiting for Alex to show up. (Which of course he does at the very end) As Lena develops a relationship with Julian though, i just felt like it was a little forced. How could she just get over losing Alex and move on? I liked Julian dont get me wrong, but he was not the one for her! 
 Finally Requiem is released and i think YES! I was really ready for the conclusion to this series. I was ready for Lena and Alex to have their happy ending! Only...it wasn't so happy! For the majority of this book (and i do mean the whole book basically) Alex and Lena barely even speak. He seemed to have absolutely nothing to do with the story. It felt as though he had almost been downgraded to a background character. 
 And poor Julian! Lena spent the entire time basically using him to prop her up as she struggled with her heartbreak over Alex. Julian kept being so understanding and overlooked the fact that she was clearly still in love with Alex. It was as though the author made Julian out to be such a weakling. His story as well as the other characters was really watered down. How could such a strong character from Pandemonium who leaves everything he knows to join the resistance, turn out to just stand by and let this girl use him? The little redeeming there was of his character was how he really stepped up as far as working for the resistance. 
 Half of this book was focused on Lena and half on Hana. I found myself truly bored by what was going on with Hana. Her story didn't seem to capture my attention at all. This spirited girl who had everything going for her had been reduced to just another girl who quietly resisted the boundries set for her by her mother and her future husband. When challenged her character seemed to just give up. 
 The book was for the most part focused on the resistance and the war brewing between the invalids and the cured. Which would have been wonderful had we been given some sort of conclusion at the end. 
 Of course Lena and Alex work their way back to each other at the end sharing about 2 kisses before they return to fighting for the resistance. But the book then just comes to a halt about 2 pages later when they tear down a wall leading them back to civilization from the wilds. The message the author was going for with the references to the tearing down of walls was great. However as the ending of a series, the reader is left to wonder what happened to all their favorite characters and the war that was going on at the time. Very disappointing and unsatisfying end to a series that could have been wonderful. Knowing how the series ends really tarnishes the whole series for me. 
 I wanted to love this book, but the author just didn't allow me to. Hopefully she will change her mind and write a 4th book for this series giving fans the ending that they and the characters truly deserve.