Blue Lily, Lily Blue went straight into action. 
 This one hooked me much better than the other two did, but, at the same time, as the ending drew closer, I found I was less interested in the ending. With The Dream Thieves I could not put it down. 
 Don't get me wrong, I loved this book (though I think Noah could have had a bigger part). And the character development of Adam was much needed! But I didn't find the plot as intriguing until the epilogue (view spoiler)[ with Piper, Neeve and the mysterious third sleeper (hide spoiler)]. 
 But the romance was good, and I love the Gray Man - I always think of him as Alaric in The Vampire Diaries TV Series. Gansey was a much better character in this book - and Ronan! I love Ronan 
 So yes, this one was good. Not as good as The Dream Thieves, but better than The Raven Boys. I liked that there was more mystery in this one, as well. 
 (view spoiler)[I also liked that people died in this one - characters we knew, which is dark, but I think it made the storyline a little more realistic and gritty - such as *MASSIVE SPOILER SO LOOK AWAY IF YOU HAVEN'T READ* Persephone's death, and even Jessie's. (hide spoiler)] 
 The Raven Boys: 6.5/10 
 The Dream Thieves: 9.5/10 (I seriously loved it) 
 Blue Lily, Lily Blue: 8/10 
 But I recommend you read it. This one set up something big for the next one. And it was good!