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 odor 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, w
