Summary- City of Heavenly Fire

Since I am very close to finishing "City of Heavenly Fire", I figured it would be a good time to summarize what has happened so far. (Spoilers) Clary, Jace, and their friends go into a demon realm called Edom to look for Sebastian and kill him to save their world. They end up getting to Sebastian but find out that he lured them there. He tried to make Clary the "Queen" of Edom, which would heal her world, while also making Sebastian stronger in his own world. She ends up saying she will be the "Queen" but only ends up tricking Sebastian and killing him with the "Heavenly Fire" that was in Jace's veins. The "Heavenly Fire" ends up absorbing all of the evil from Sebastian, which also ends up killing him. They end up becoming stuck in Edom, until a major demon of that realm helps them, but only if they gave up their friend Simon in exchange for their safe return to their world. They give up Simon and return to their homes. This is where I last ended in the book.