I constantly consulted my watch by the light of my electric lantern, and listened with feverish anxiety at the receiver of the telephone; but for more than a quarter of an hour heard nothing. Then a faint clicking came from the instrument, and I called down to my friend in a tense voice. Apprehensive as I was, I was nevertheless unprepared for the words which came up from that uncanny vault in accents more alarmed and quivering than any I had heard before from Harley Warren. He who had so calmly left me a little while previously, now called from below in a shaky whisper more portentous than the loudest shriek: