Who to Trust?

Alexandra met him when she was sixteen. He was a weak thirsty vampire that wanted to kill her family. She defended herself. Now he's back and he needs her help. He claims some vampires have changed their ways and something is hunting them. She has the information about supernatural beings beyond what the vampires know. They need her more than anything, but should she trust him? After all, he did try to kill her family...When she decides to trust him, the truth about her life is revealed-the truth about her family. She doesn't like one bit of it. There's no backing out. Her family is in danger. She's forced to live a life that she had no choosing in. (Credit to whoever took the cover picture)