The Boy-Who-Lived-to-Die

ONE-SHOT: What happens if Lord Voldemort had been smart, and remembered that phoenix tears had healing powers before Fawkes could cry into the wound? What happens if the Boy-Who-Lived died, but was given a second chance as a demon to haunt the Dursleys? What will happen to the Dursleys? Dead Harry, Demon Harry, Rated T for Torture Scenes