The Demon’s Lexicon by Sarah Rees Brennan

Coming from Simon & Schuster on 06.02.2009

And then the best summary I could find, from the 2009 Debutantes website:

Two brothers are hunted throughout England by a powerful magician’s circle after their mother steals a charm, and when the eldest is marked by a demon, the younger uses swords and dark arts in an effort to save him but unwittingly uncovers the darkest of secrets.

Doesn’t that sound intriguing? Also, the blurbs on the author’s website are from Scott Westerfeld, Holly Black, and Cassandra Clare. Triple awesome. This sounds like great fantasy, and I can’t wait to read it! Put it on your wishlists.