Somehow I didn't realize at first that this book has two novels in one volume. I was relieved when I got to the end of Glass Houses halfway through the thick book. As far as teen paranormal fiction goes, GH is less compelling and believable (you know what I mean, that the unbelievable has a logic to it that makes sense) than some others of its genre. It's also different from many others of its ilk in that the vampires are all for-real bad guys.
The protagonist, Claire Danvers, is an underage smartypants who entered college two years ahead of her peers. Because of her youth, her parents made her go to an in-state (Texas) college, rather than a fancy institution like MIT, which is where Claire really wants to go.
After a particularly bad freshman dorm experience Claire answers an ad for an off-campus situation. Her new housemates enlighten her as to the town's open secret--that the place is crawling with vamps, and that those without protection are unprotected.
Unfortunately I didn't particularly care for Claire and don't get why her roommates do. Other than some bits in the library that reveal that the author has some advanced knowledge of the bibliographic sciences (advanced for a lay person, in that she knows and cares about the difference between LC and Dewey), I found the book rather unimpressive.