This is a series I've greatly enjoyed from the beginning and have been unable to choose between Will and Jem (though his disease might have swung me towards Will if I were Tessa.) Well coming into [b:Clockwork Princess|6131164|Clockwork Princess (The Infernal Devices, #3)|Cassandra Clare|http://d202m5krfqbpi5.cloudfront.net/books/1369452245s/6131164.jpg|6309710] we know that Tessa is going to marry Jem or is she? Jem is very sick and surviving only with the aid of yin fen, a drug that temporarily alleviates his symptoms but also accelerates his decline. This does not keep him from fighting the clockwork creatures when they attack the Institute.
The Magister still wants Tessa and we finally find out why. This was really interesting and had quite a few surprises as well. The section involving the giant worm was really creepy and scary but I liked how Gabriel Lightwood finally does the right thing. I really liked the addition of Gabriel at the Institute. It's too bad the series is over as I wonder if he and Cecily would have...
All in all this was an exciting conclusion that tied up most of the loose ends. A truly wonderful series that had a little something for both Will and Jem fans.