This was my favorite book of the Twilight series! It picks up right where "New Moon" left off and Bella and Edward are back together, preparing to graduate from high school. Meanwhile, Bella reestablishes her friendship with Jacob, causing many awkward moments between Edward and Jacob. Eventually, Bella realizes that there's much more to her relationship with Jacob than she initially thought...
Without spoiling the book, I'll just say that this was the most action-packed of the series thus far, and definitely my favorite. I'm really looking forward to the movie (opening this summer!)