Vampire Summer by Carter Johnson

After flunking out of college and returning home to his overbearing father six months ago, Nick Monroe has felt stuck ever since. Now that his friends are all home for break, including his longtime friend and Spring Break fling Megan, Nick will try to navigate the murky waters of that first summer home from college. But something else is happening around him and his friends, something they could never see coming. A new family has moved into a house just down the street from Nick; a handsome older father, an enigmatic stepmother, and three vivacious young daughters around Nick’s age. Their arrival brings a strange new illness to the neighborhood ... Now it’s up to Nick, Megan, and their friends to put a stop to the evil spreading through their childhood homes, before it puts an end to everything around them …