Read it through once

“He came up to the window in the mist, as I had seen him often before; but he was solid then--not a ghost, and his eyes were fierce like a man’s when angry. He was laughing with his red mouth; the sharp white teeth glinted in the moonlight when he turned to look back over the belt of trees, to where the dogs were barking. I wouldn’t ask him to come in at first, though I knew he wanted to--just as he had wanted all along. Then he began promising me things--not in words but by doing them.” He was interrupted by a word from the Professor:--