Commencing his descent of the dark stairs. Ammi heard a thud below him. He even thought a scream had been suddenly choked off, and recalled nervously the clammy vapour which had brushed by him in that frightful room above. What presence had his cry and entry started up? Halted by some vague fear, he heard still further sounds below. Indubitably there was a sort of heavy dragging, and a most detestably sticky noise as of some fiendish and unclean species of suction. With an associative sense goaded to feverish heights, he thought unaccountably of what he had seen upstairs. Good God! What eldritch dream-world was this into which he had blundered? He dared move neither backward nor forward, but stood there trembling at the black curve of the boxed-in staircase.