"If he killed those two people with his own hands, he couldn't act any different," Peterson said to Landon, whom he frequently consulted. "But I can't imagine any way to connect him up with it. He was home in East Dryden when they died, and that's certain. Now, if he could have made old Thorpe act as his tool--but, Lord, why would he do it, anyhow! It's too absurd to think Stebbins would want to take those two lives! He wanted you people should be scared, that I'm sure of. He did all he could to scare you,--that I know. But as to killing any of you, I'm sure he didn't. Howsumever, somebody committed those murders, and I'm going to find out who!" CHAPTER XII The Professor's Experience But the days passed by, and Dan Peterson was unable to make good his word. Everybody, outside of the immediate household at Black Aspens believed the two mysterious deaths were the result of the murderous intent of one or more human beings, and refused absolutely to consider the spook nonsense offered in explanation by the friends and relatives of the victims. Meanwhile there were a few further inexplicable happenings in the old house. Now and then, one or another would notice the odour of prussic acid, or would report a glimpse of a ghostly figure prowling round at night, or tell of hearing low moans at four o'clock in the morning. But, usually, these were the experiences of only one, and lacking corroboration, could be set down to imagination, which was now especially vivid in all the party. Often Eve or Norma recounted some of these mysteries, but Landon laughed at them and said the girls had been dreaming. Professor Hardwick experienced no similar illusions, though he longed to do so. Indeed, he really watched and listened, hoping for some message or manifestation from his friend, Gifford Bruce. But none was vouchsafed to him, and though interested in the experiences of the others, he still longed for a personal experience. And finally one came to him. At four o'clock one morning, he lay awake, as often, listening to the strokes of the hall clock, which none of them could ever hear without a thrill, and slowly in at his bedroom door floated a dim, ghostly shape. There was not sufficient light for him to discern more than the outline of what seemed to be a tall, gaunt figure, with a shawl over its head. Nearer to him the thing came, and the old Professor felt himself grow cold with fear. He had often boasted of his desire to see the ghost, and of his scorn of fear in connection therewith. But now, that the spectre had really appeared to him, the old man trembled all over, and tried in vain to cry out. His throat contracted, his tongue was powerless, and a sort of paralysis of terror held him in thrall. The approaching figure seemed not to walk, but progressed by a strange gliding motion, and came within a foot or two of the bed, where the Professor lay, shivering with dread.