There's no doubt about it--paranormal fiction is hot right now. The author's shelves are full of vampires and werewolves, faeries and zombies. As a fan of all things supernatural, she is thrilled about this explosion of the immortal, the unknown, and the mythological. And yet, it feels like people missing the eternal constant in this renaissance: ghosts. In this article, the author shares a handful of her favorite titles--some old, some new--all flickering with the light of a story well-haunted, the perfect thing for restless tweens and teens.