The book trailer for Cassanda Clare's Clockwork Princess, the third and final novel in the Infernal Devices trilogy, premiered Thursday morning on EW's Shelf Life and Simon & Schuster has already uploaded the YouTube version!

I'm equal parts incredibly excited and terrified to read Clockwork Princess! Just thinking about the different possibilities about what could happen already leave me an emotional mess. How will I deal with all the FEELINGS when I actually have a copy in my hands?

And don't forget, Shadowhunters! Beginning this Tuesday, February 26 at 2:00 pm EST, the more times you use the hashtag #ClockworkPrincess in your tweets, the more the first chapter will reveal itself on the official Shadowhunters website!

Are you Team Jem or Team Will? Difficult choices will be made... and Tessa certainly doesn't have an easy task ahead of her as we reach the conclusion of the Infernal Devices trilogy. Enjoy the book trailer! 

Release Date: March 19, 2013
Publisher: Margaret K. McElderry Books
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Summary (from Goodreads):

Danger intensifies for the Shadowhunters as the New York Times bestselling Infernal Devices trilogy comes to a close.

If the only way to save the world was to destroy what you loved most, would you do it?

The clock is ticking. Everyone must choose.

Passion. Power. Secrets. Enchantment.

Danger closes in around the Shadowhunters in the final installment of the bestselling Infernal Devices trilogy.