No live organism can continue for long to exist sanely under conditions of absolute reality; even larks and katydids are supposed, by some, to dream. Hill House, not sane, stood by itself against its hills, holding darkness within; it had stood so for eighty years and might stand for eighty more. Within, walls continued upright, bricks met neatly, floors were firm, and doors were sensibly shut; silence lay steadily against the wood and stone of Hill House, and whatever walked there, walked alone. Dr. John Montague was a doctor of philosophy; he had taken his degree in anthropology, feeling obscurely that in this field he might come closest to his true vocation, the analysis of supernatural manifestations. He was scrupulous about the use of his title because, his investigations being so utterly unscientific, he hoped to borrow an air of respectability, even scholarly authority, from his education. It had cost him a good deal, in money and pride, since he was not a begging man, to rent Hill House for three months, but he expected absolutely to be compensated for his pains by the sensation following upon the publication of his definitive work on the causes and effects of psychic disturbances in a house commonly known as “haunted.” He had been looking for an honestly haunted house all his life. When he heard of Hill House he had been at first doubtful, then hopeful, then indefatigable; he was not the man to let go of Hill House once he had found it.