The Vault of Destinies (James Potter #3) by G. Norman Lippert

beneath his muscled arm and stunning it with the staff in his other hand. To James, it didn't look like a fair fight. He found himself rooting for the octopus.
    It had been a very strange summer. The surprise arrival of Petra and Izzy had, of course, caused quite a stir. It had happened mere weeks after the last day of school, and James had only just begun to get comfortable with the fact that Petra had graduated and would not be showing up in the Gryffindor common room next term. It was a shame, he told himself, because he had finally admitted to himself that he did, in fact, feel something stronger for Petra than mere friendship. Apparently, everyone else had seen it before he had, including his own mum, who had made some fairly embarrassing comments about it in the wake of the school play. Despite the fact that the event had ended in a disastrous uproar, James had spent more than a few wistful moments remembering the fact that the play, The Triumvirate , had required he and Petra to play the parts of doomed lovers. He was still young enough to think that that pairing had been ripe with cosmic significance, and had secretly (so secretly that he himself had barely even known it) hoped that Petra would recognize it as well.
    She had not, of course.
    At first, James had believed that this was because Petra was still in love with her former beau, Ted Lupin. Later, however, he'd realized that Petra had been under the influence of a secret, awful curse. Due to a series of very wicked schemes, set in motion by none other than the long dead Dark Lord himself, Petra Morganstern was the living carrier of that villain's last, ghostly shred of soul. It had been imparted to her while she was still in her mother's womb, transmitted via a special, nearly unheard-of bit of cruel, dark magic: a special kind of Horcrux, in the shape of an ugly silver dagger.
    James' dad had done some research on it, with the help of Aunt Hermione, and had discovered that such a thing was called a 'transcendent Horcrux'. They'd only found one reference to it, in a book so dark and treacherous that James' dad and Uncle Ron had had to bolt it to the table with silver stakes to keep it from snapping their hands off. According to their awed, whispered conversations (which James and Albus had surreptitiously listened in on), a transcendent Horcrux was purely theoretical; no one, at the time of the book's writing, had ever succeeded in actually creating one. Unlike other Horcruxes, a transcendent Horcrux could never be used to restore the bit of soul it contained to its original host. If such a thing were attempted, it would act as a kind of poison, killing every other bit of the soul it had been sheared from, regardless of how many normal Horcruxes were in use. The shred of preserved soul in a transcendent Horcrux had to be passed on to another host, accepted willingly, there to spread its influence and live on, leech-like.
    Petra's mother had been tricked into transmuting the curse of Voldemort's soul into her unborn baby, but that didn't make James hate her any less. As far as he was concerned, the woman had to have been either stupid, gullible, or blind. Miraculously, however, Petra herself loved her long dead mother, loved her and missed her enough to have nearly doomed all of mankind in the hopes of somehow bringing her back to life. In the end, fortunately, Petra herself had been stronger and smarter than her mother had been, and she had made the right choice—the hard choice. She had rejected the deal offered to her by the otherworldly beast called the Gatekeeper, even though it had meant the loss of the one thing she'd most wanted in all the world: the return of her dead parents.
    Not very surprisingly, the realization of all of these things had not in the least diminished James' fascination with the young witch. If anything, it had increased it. James himself had confronted the Gatekeeper, and knew the awful stresses Petra had to have endured in rejecting