Vampire Academy books 1-3

The Vampire Academy series by Richelle Mead is a great series about, as the title suggests, vampires.  In the series, dhampir Rose Hathaway is set to protect the Moroi princess Lissa Dragomir.  They had escaped the confines of the school, St. Vladimir's, and are on the run for 2 years before they must return and are forced to stay again.  Strange things had been happening that had caused them to leave in the first place, and the fear comes back once they return.

I've read these books twice now, and they seemed to get better with each page I turned.  If you enjoy vampire books, these ones also take on a different aspect of vampire legends: dhampirs, Moroi, and Strigoi, aspects that are very rarely mentioned.

Vampire Academy
Frostbite
Shadow Kiss