Well, that was so much better than the first two books! (...Or maybe I'm just getting used to Lore's writing style) 
 I loooved all the action and trust me, this is the most action-packed novel in this series so far. 
 Like with The Power of Six, the alternating perspectives threw me off guard at first, especially since The Rise of Nine alternates between three characters this time (Four, Seven, and now Six). I didn't really like the idea of Six having her own narrative because I enjoyed the air of mystery that surrounded her in the previous two books. 
 Again, like with The Power of Six you would think that The Rise of Nine would be about Nine or written in his perspective. Although we do get to know Nine a bit better, this book mostly focused on reuniting everyone. 
 Also, I found that all the characters are super likable except for Four. I still don't like him. In fact, he annoys me more and more with every page. It also appears as though he's falling in love with Nine... take this passage for example: 
 "Every time I think I have Nine figured out, he does something to turn it around and I end up liking him even more" 
 He sounds like a teenage girl falling for the bad boy.