Chief Inspector Carlisle walked over to the table at which Chundermeyer was seated.

“I have met your partner, sir,” he said, “and I gathered that you were on your way to Amsterdam with a parcel of rough stones; in fact, I supposed that you had arrived there by now.”

“I am fond of Cairo during the Christmas season,” explained the other, “and I broke my journey. But now I sincerely wish I were elsewhere.”

“Oh, I shouldn’t worry!” said the detective cheerily. “There are enough of us on the look-out.”

But Mr. Chundermeyer remained palpably uneasy.

III

The gardens of the hotel on the following night presented a fairy-like spectacle. Lights concealed among the flower-beds, the bloom-covered arbors, and the feathery leafage of the acacias, suffused a sort of weird glow, suggesting the presence of a million fire-flies. Up beneath the crowns of the lofty palms little colored electric lamps were set, producing an illusion of supernatural fruit, whilst the fountain had been magically converted into a cascade of fire.

In the ball-room, where the orchestra played, and a hundred mosque lamps bathed the apartment in soft illumination, a cosmopolitan throng danced around a giant Christmas tree, their costumes a clash of color to have filled a theatrical producer with horror, outraging history and linking the ages in startling fashion. Thus, St. Antony of the Thebäid danced with Salome, the luresome daughter of Herodias; Nero’s arm was about the waist of Good Queen Bess; Charles II cantered through a two-step with a red-haired Vestal Virgin; and the Queen of Sheba (Daphne Collis) had no less appropriate a partner than Sherlock Holmes.

Doubtless it was all very amusing, but, personally, I stand by my commonplace dress-suit, having, perhaps, rather a ridiculous sense of dignity. Inspector Carlisle also was soberly arrayed, and we had several chats during the evening; he struck me as being a man of considerable culture and great shrewdness.

For Abû Tabâh I looked in vain. Following our conversation on the previous afternoon, he had vanished like a figment of a dream. I several times saw Chundermeyer, who had elected to disguise himself as Al-Mokanna, the Veiled Prophet of Khorassan. He seemed to be an enthusiastic dancer, and there was no lack of partners.