Dem Cliffhangers

So I'm reading The Mortal Instruments series and I stayed up to finish the last forty or so pages of City of Fallen Angels. I was like 'Kay, I'll just finish it and my mind will be at ease.' NO SUCH LUCK. Not gonna post any spoilers, but let's just say its a good thing I didn't have the next book already checked out, or I would be all over that thing instead of typing this. Now I just really want to know what happens and I hope I can fall asleep.