This was a really good book - for the plot & sub characters & the nemesis.My only problem is Clary. OMG was she stupid & selfish & egoistic to the core. In What world does the world be run by idiotic teenagers. That was what I felt while reading her parts. The story is amazing & the side characters - Isabelle, Simon, Magnus and Alec were simply daring & thrilling to read. Sebastian is such a good nemesis. I just wish they left Clary & Jace, and concentrated the story on the above characters.