Professor Fortis couldn't help the little laugh that escaped. He clapped a hand over Charlie's shoulder. "Keep your wits Mr. Oliver," he said coolly. He had to admit Emilie's transfiguration was a pretty brilliant idea. "Miss Devlin's transfiguration has proven to be quite ingenious."

"I thought I heard a noise," he said indicating the area in front of them. "Mr. Oliver if you will flank my left side, Miss Devlin the right?" he suggested.