The Potter Twins: The Deception

Harry had a twin; and together they were destined to have more power than anyone before them. Voldemort attacks, and ends up as a spirit. Then he notices the girl's incredibly strong aura and decides to befriend her instead of killing her; taking her away before Hagrid shows up, leaving Harry behind. Will eventually be Voldemort/OC. Rated T for safety's sake. ABANDONED SORRY