That was it! Barry was filled with joy. All that had happened in the past three terms now all came together..... the treasure was the mirror, the hunt must have been only to free the ghosts so that they could tell them the treasure. The grey lady had thought to protect the treasure and so the side affect was what happened to the professers

"But why wern`t all the professers affected?" asked Barry before he knew it, all questions must be answered after all.