The Vampire Diaries. The Hunters. Moonsong: L. Smith

Life is better than ever, Elena and her friends can't wait to attend Dalcrest College. But when students start to disappear from campus, suddenly every new acquaintance is a potential enemy.
Then Elena uncovers a long-hidden secret, one that shocks her to the core, she realises that darkness has followed her from Fell's Church. But will it be Stefan or Damon who catches her when she falls?