Blackness, utter blackness, was before him. The figure which he had pursued seemed to have been swallowed up. He stumbled on, gropingly, hands outstretched, then fell—fell, as he realised in the moment of falling, down a short flight of stone steps.

Still amid utter blackness, he got upon his feet, shaken but otherwise unhurt by his fall. He turned about, expecting to see some glimmer of light from the stairway, but the blackness was unbroken. Silence and gloom hemmed him in. He stood for a moment, listening intently.

A shaft of light pierced the darkness, as a shutter was thrown open. Through an iron-barred window the light shone; and with the light came a breath of stifling perfume. That perfume carried his imagination back instantly to a room at Oxford, and he advanced and looked through into the place beyond. He drew a swift breath, clutched the bars, and was silent—stricken speechless.

He looked into a large and lofty room, lighted by several hanging lamps. It had a carpeted divan at one end and was otherwise scantily furnished, in the Eastern manner. A silver incense-burner smoked upon a large praying-carpet, and by it stood the man in the crocodile mask. An Arab girl, fantastically attired, who had evidently just opened the shutters, was now helping him to remove the hideous head-dress.

She presently untied the last of the fastenings and lifted the thing from the man's shoulders, moving away with the gliding step of the Oriental, and leaving him standing there in his short white tunic, bare-legged and sandalled.

The smoke of the incense curled upward and played around the straight, slim figure, drew vaporous lines about the still, ivory face—the handsome, sinister face, sometimes partly veiling the long black eyes and sometimes showing them in all their unnatural brightness. So the man stood, looking towards the barred window.

It was Antony Ferrara!

"Ah, dear Cairn—" the husky musical voice smote upon Cairn's ears as the most hated sound in nature—"you have followed me. Not content with driving me from London, you would also render Cairo—my dear Cairo—untenable for me."

Cairn clutched the bars but was silent.

"How wrong of you, Cairn!" the soft voice mocked. "This attention is so harmful—to you. Do you know, Cairn, the Sudanese formed the extraordinary opinion that I was an efreet, and this strange reputation has followed me right down the Nile. Your father, my dear friend, has studied these odd matters, and he would tell you that there is no power, in Nature, higher than the human will. Actually, Cairn, they have ascribed to me the direction of the Khamsîn, and so many worthy Egyptians have made up their minds that I travel with the storm—or that the storm follows me—that something of the kind has really come to pass! Or is it merely coincidence, Cairn? Who can say?"