Clockwork Prince

So.
TWO MORE FRIGGING DAYS TILL CLOCKWORK PRINCE'S REALIZE!
If you don't know what Clockwork Prince is it the second book of the Infernal Devices by the one and only Cassandra Clare-here's the link to her tumblr http://cassandraclare.tumblr.com/ -She writes books about demon fighting Nephilim who kick some serious ass throughout the first series she wrote about them which are, City of Bones, City of Ashes, City of Glass, City of Fallen Angels, City of Lost Souls (comes out next may) and City of Heavenly Fire (which comes out in 2013 I think). The second series she's writing about them sets place in the 19th century in London. It is about nearly all the characters in the first series (which is called the Mortal Instruments by the way) ancestors. So, without giving to much away, it is central to a girl named Theresa or Tessa Grey who after her Aunt's death, moves to London to live with her brother. But when she gets there she is kidnapped and is told that if she doesn't do what they want her brother will suffer for it. She learns that she has the uncanny ability to change into any other person by holding a personal item of their's.
I, personally, love the Infernal Devices wayyyyyyyyyyyy more then the Mortal Instruments.
So, firstly, what do you think will happen if you've read them and secondly, if you haven't, why aren't you at a book shop?