"There have been mysterious outrages committed, I believe, upon many of those who have come in contact with the slipper?" asked one of the savants.

"Exactly. Professor Deeping was undoubtedly among the victims. His instructions were explicit that the relic should be brought here by a Moslem, but for a long time we failed to discover any Moslem who would undertake the task; and, as you are aware, while the slipper remained at the Professor's house attempts were made to steal it."

He ceased uneasily, and glanced at the tall Eastern figure. It had edged a little nearer; the head was still bowed and the fine yellow waxen fingers of the hand from which he had removed his glove fumbled with the catalogue's leaves. It may well have been that in those days I read menace in every eye, yet I felt assured that the yellow visitor was eavesdropping — was malignantly attentive to the conversation.

The curator spoke lower than ever now; no one beyond the circle could possibly hear him as he proceeded—

"We discovered an Alexandrian Greek who, for personal reasons, not unconnected with matrimony, had turned Moslem! He carried the slipper here, strongly escorted, and placed it where you now see it. No other hand has touched it." (The speaker's voice was raised ever so slightly.) "You will note that there is a rail around the case, to prevent visitors from touching even the glass."

"Ah," said Dr. Nicholson quizzically, "And has anything untoward happened to our Graeco-Moslem friend?"

"Perhaps Inspector Bristol can tell," replied the curator.

The straight, military figure of the well-known Scotland Yard man was conspicuous among the group of distinguished — and mostly round-shouldered — scholars.

"Sorry, gentlemen," he said, smiling, "but Mr. Acepulos has vanished from his tobacco shop in Soho. I am not apprehensive that he had been kidnapped or anything of that kind. I think rather that the date of his disappearance tallies with that on which he cashed his cheque for service rendered! His present wife is getting most unbeautifully fat, too."

"What precautions," someone asked, "are being taken to guard the slipper?"