Dark of Night by Emily Goodwin

Everything has a cost.
I never thought the cost of falling in love could be my life. But when the Vampire Council gets reports of increased magical activity in the surrounding areas, they give the order for vampires to kill any witches they come across. I trust Lucas to never hurt me, but he’s not the only vampire in my life, and let’s just say the others aren’t my biggest fans.
While I’m busy trying not to be come vampire chow, something dark and powerful is surrounding Thorne Hill, infecting everything—and everyone—that gets in its path. If the darkness gets to the Ley line, then the whole town is doomed.
I won’t go down without a fight, but how can I fight something I can’t even see?