The Terror Nights

The ghosts of Hogwarts have disappeared and been replaced with malevolent spirits with a taste for bringing pain to the living. To make matters worse the entire Hogwarts grounds have been surrounded with a magic force field that not even Dumbledore has figured out how to break. Harry and the gang have to find out how the evil ghosts got there. But the answer may be even more frightening then the ghosts themselves......(Fic 2 of The Emerald Spellbook Series.)