Blood Bound by Sharon Stevenson
Twin teen demon trackers Shaun and Sarah battle more than just vamps and other supernatural beings. They go head to head with personal baggage, including a tense relationship with family. Poor Shaun spends the book believing he’s bound to a psycho demon tracker, while Sarah has to choose between 4 guys – 1 one of whom is a demon presence. It’s all very complicated with her.
It’s a pretty good book, though. Hell, I read it in a single day. It’s just the right length and I was into it within the first chapter. That’s always a good sign.