Heartbeat (Heartbeat #1)

Eva, a high school outcast, finds herself witness to a horrible secret: the most popular boy in school enjoys the taste of blood and will kill to get his hands on it. Horrified and intrigued, Eva lets herself be pulled into Donatien’s macabre world. He offers the escape she has been looking for... but how much is Eva willing to betray her moral code in order to find something that gives her life meaning? And will she - or Donatien - ever find redemption?