I looked up the series and I can say it actually sounds reallly good. Here's what I know about it so far:
Cat is a half human/half vampire which is extremely rare. She hates vampires and kills with vengeance while looking for her father ( a vampire) who ruined her mother's life (human). *This already sounds good* Until she meets Bones who happens to be a vampire and learns a few things here and there about the undead. Hmmm.... vampire wars and secret government agencies. Now this I want to read. Oh yeah it gets better. Jealousy from both main characters does make the story better doesn't it? Well I'm going to try and get these books so I can read them ASAP!!!