Barbie: The Vampire Hunter Series

I can't say my parents never warned me about vampires. I just never believed them. Not - that is - until six months ago when vampires broke into my home and killed my family. Thanks to all the skills my parents taught me, I managed to escape but I couldn't save them. Two vampires down and the rest of the world to go. My bid for revenge is going to have to wait, though, because until I turn 18, I'm being placed in the loving care of Elizabeth and Jonathan McKnight - godparents I didn't even know existed.

I never wanted to be a killer. Not until my entire family was slaughtered. Now, though? Now, killing is what I live for. And I've gone so far down my path for vengeance that there's no going back. I made a deal with a demon, and I liked it. The power that comes with demon possession is heady. The more I use it, the more addicted I become, even if it does come with a little catch. Sex demons need sex to survive, after all. 

A year ago, I thought my whole world had ended. My family was dead. The life that I knew had been changed forever. Now I know that was just the beginning. I faced down the devil who destroyed my family, and I f--king lost. I've become the thing I hate most in this world, and there is no turning back. Even a contract with a demon couldn't save me from the creature that now inhabits my body.