The 4th book in the Mortal Instruments series is the first book I've bought on my own Nook that I didn't already own. (Twilight of course had to be the first, and soon I'll own the whole Twilight series on my Nook so that I can read it whenever and wherever I am without having to carry the huge books around.)
Normally I don't like when books change character viewpoints back and forth. But this book did it very well, and perfectly for the story. Although there were some times that I was like, NO! Go back to Clary and Jace! And on my Nook, it doesn't give you the separation of extra space or anything like a normal book would, but that's okay. I figured it out.
In this book, they are back from Idris, the different supernatural groups all have their representatives on the council. Clary is now finally getting to train to be a Shadowhunter, although at her age she is way behind where she should be from all the missed years of training. There have been several Shadowhunters turning up dead. In different areas to throw suspicion on Werewolves, Fairies, and Vampires. Clary's friend Simon is having trouble at home, his mother is beginning to suspect something is up, and she finally does and he has to make her forget, and so he leaves, becoming homeless until the new band member Kyle invites him to stay with him. Simon is also juggling both Isabella and Maia. Jace is acting strange. One moment he is so loving and there for Clary, the next moment he's pulling away and saying it would be better if they were apart. Jace keeps having dreams of killing Clary. Turns out Clary's actions at the end of the last book have some unforeseen consequences. A great book, left hanging at the end again, and now have to wait for the next one to come out!
Although, I guess I could go ahead and read Clockwork Angel to keep me in the world while I wait.