The Vampire Hunter Trilogy: The Key

Do you know vampires are walking among us? Also, most stereotypes about them are a lie. Yeah, I didn't know any of this either. It was when I had to move in with my brothers that I found out the truth. In the last few months, I've learned my parents were keeping many secrets from me. For example, my dad was a vampire hunter and my brothers joined in. When I was bitten by a vampire for the first time, I learned quickly I was different. I did not die, but the vampire who bit me did. Now we are on a mission to save the world from vampires, and my brothers and I are trying to figure out what I am.