"They're here, sir--now, while I'm speaking! I have been fighting--fighting hard--for half an hour. The place smells like a charnel-house and the--shapes are taking definite, horrible form! They have ... _eyes_!" His voice sounded harsh. "Quite black the eyes are, and they shine like beads! It's gradually wearing me down, although I have myself in hand, so far. I mean I might crack up--at any moment. Bah!--" His voice ceased. "Hullo!" cried Dr. Cairn. "Hullo, Rob!" "It's all right, sir," came, all but inaudibly. "The--things are all around the edge of the light patch; they make a sort of rustling noise. It is a tremendous, conscious _effort_ to keep them at bay. While I was speaking, I somehow lost my grip of the situation. One--crawled ... it fastened on my hand ... a hairy, many-limbed horror.... Oh, my God! another is touching...." "Rob! Rob! Keep your nerve, boy! Do you hear?" "Yes--yes--" faintly. "_Pray_, my boy--pray for strength, and it will come to you! You _must_ hold out for another ten minutes. Ten minutes--do you understand?" "Yes! yes!--Merciful God!--if you can help me, do it, sir, or--" "Hold out, boy! In _ten minutes_ you'll have won." Dr. Cairn hung up the receiver, raced from the library, and grabbing a cap from the rack in the hall, ran down the steps and bounded into the waiting car, shouting an address to the man. Piccadilly was gay with supper-bound theatre crowds when he leapt out and ran into the hall-way which had been the scene of Robert's meeting with Myra Duquesne. Dr. Cairn ran past the lift doors and went up the stairs three steps at a time. He pressed his finger to the bell-push beside Antony Ferrara's door and held it there until the door opened and a dusky face appeared in the opening. The visitor thrust his way in, past the white-clad man holding out his arms to detain him. "Not at home, _effendim_--" Dr. Cairn shot out a sinewy hand, grabbed the man--he was a tall _fellahin_--by the shoulder, and sent him spinning across the mosaic floor of the _mandarah_. The air was heavy with the perfume of ambergris. Wasting no word upon the reeling man, Dr. Cairn stepped to the doorway. He jerked the drapery aside and found himself in a dark corridor. From his son's description of the chambers he had no difficulty in recognising the door of the study. He turned the handle--the door proved to be unlocked--and entered the darkened room. In the grate a huge fire glowed redly; the temperature of the place was almost unbearable. On the table the light from the silver lamp shed a patch of radiance, but the rest of the study was veiled in shadow. A black-robed figure was seated in a high-backed, carved chair; one corner of the cowl-like garment was thrown across the table. Half rising, the figure turned--and, an evil apparition in the glow from the fire, Antony Ferrara faced the intruder. Dr. Cairn walked forward, until he stood over the other. "Uncover what you have on the table," he said succinctly.