Harry has become a vampire. Why? Well, Maximillian was a vampire hiding in Brooklyn. After that, he actually came to England for a while. Time was running out for him, and since vampires are dwindling in numbers, he set his sights on Harry Potter-the boy who lived-and pounced. He bit him on sight. Harry woke up and felt his body changing: he had fangs, his green eyes glowed, and he experienced cravings for blood.