And now he was ascending the marble steps. Before the gates of the lift he stood and pressed the bell.

Ferrara's proved to be a first-floor suite, and the doors were opened by an Eastern servant dressed in white.

"His beastly theatrical affectation again!" muttered Cairn. "The man should have been a music-hall illusionist!"

The visitor was salaamed into a small reception room. Of this apartment the walls and ceiling were entirely covered by a fretwork in sandalwood, evidently Oriental in workmanship. In niches, or doorless cup-boards; stood curious-looking vases and pots. Heavy curtains of rich fabric draped the doors. The floor was of mosaic, and a small fountain played in the centre. A cushioned divan occupied one side of the place, from which natural light was entirely excluded and which was illuminated only by an ornate lantern swung from the ceiling. This lantern had panes of blue glass, producing a singular effect. A silver mibkharah, or incense-burner, stood near to one corner of the divan and emitted a subtle perfume. As the servant withdrew:

"Good heavens!" muttered Cairn, disgustedly; "poor Sir Michael's fortune won't last long at this rate!" He glanced at the smoking mibkharah. "Phew! effeminate beast! Ambergris!"

No more singular anomaly could well be pictured than that afforded by the lean, neatly-groomed Scotsman, with his fresh, clean-shaven face and typically British air, in this setting of Eastern voluptuousness.

The dusky servitor drew back a curtain and waved him to enter, bowing low as the visitor passed. Cairn found himself in Antony Ferrara's study. A huge fire was blazing in the grate, rendering the heat of the study almost insufferable.

It was, he perceived, an elaborated copy of Ferrara's room at Oxford; infinitely more spacious, of course, and by reason of the rugs, cushions and carpets with which its floor was strewn, suggestive of great opulence. But the littered table was there, with its nameless instruments and its extraordinary silver lamp; the mummies were there; the antique volumes, rolls of papyrus, preserved snakes and cats and ibises, statuettes of Isis, Osiris and other Nile deities were there; the many photographs of women, too (Cairn had dubbed it at Oxford "the zenana"); above all, there was Antony Ferrara.

He wore the silver-grey dressing-gown trimmed with white swansdown in which Cairn had seen him before. His statuesque ivory face was set in a smile, which yet was no smile of welcome; the over-red lips smiled alone; the long, glittering dark eyes were joyless; almost, beneath the straightly-pencilled brows, sinister. Save for the short, lustreless hair it was the face of a handsome, evil woman.

"My dear Cairn—what a welcome interruption. How good of you!"