“You know, my boy,” he said, “I should never have allowed Eileen” (his daughter) “to remain in Cairo, if I had foreseen this change in the weather. This infernal wind, coming right through the native town, is loaded with infection.”
“Has it affected her, then?” asked Sime anxiously.
“She nearly fainted in the ballroom,” replied the Colonel. “Her mother took her home half an hour ago. I looked for you everywhere, but couldn’t find you.”
“Quite a number have succumbed,” said Sime.
“Eileen seemed to be slightly hysterical,” continued the Colonel. “She persisted that someone wearing a crocodile mask had been standing beside her at the moment that she was taken ill.”
Sime started; perhaps Cairn’s story was not a matter of imagination after all.
“There is someone here, dressed like that, I believe,” he replied, with affected carelessness. “He seems to have frightened several people. Any idea who he is?”
“My dear chap!” cried the Colonel, “I have been searching the place for him! But I have never once set eyes upon him. I was about to ask if you knew anything about it!”
Sime returned to the table where Cairn was sitting. The latter seemed to have recovered somewhat; but he looked far from well. Sime stared at him critically.
“I should turn in,” he said, “if I were you. Khamsin is playing the deuce with people. I only hope it does not justify its name and blow for fifty days.”
“Have you seen the man in the mask!” asked Cairn.
“No,” replied Sime, “but he’s here alright; others have seen him.”
Cairn stood up rather unsteadily, and with Sime made his way through the moving crowd to the stairs. The band was still playing, but the cloud of gloom which had settled upon the place, refused to be dissipated.
“Good night, Cairn,” said Sime, “see you in the morning.”
Robert Cairn, with aching head and a growing sensation of nausea, paused on the landing, looking down into the court below. He could not disguise from himself that he felt ill, not nervously ill as in London, but physically sick. This superheated air was difficult to breathe; it seemed to rise in waves from below.
Then, from a weary glancing at the figures beneath him, his attitude changed to one of tense watching.
A man, wearing the crocodile mask of Set, stood by a huge urn containing a palm, looking up to the landing!
Cairn’s weakness left him, and in its place came an indescribable anger, a longing to drive his fist into that grinning mask. He turned and ran lightly down the stairs, conscious of a sudden glow of energy. Reaching the floor, he saw the mask making across the hall, in the direction of the outer door. As rapidly as possible, for he could not run, without attracting undesirable attention, Cairn followed. The figure of Set passed out on to the terrace, but when Cairn in turn swung open the door, his quarry had vanished.
Then, in an arabîyeh just driving off, he detected the hideous mask. Hatless as he was, he ran down the steps and threw himself into another. The carriage-controller was in attendance, and Cairn rapidly told him to instruct the driver to follow the arabîyeh which had just left. The man lashed up his horses, turned the carriage, and went galloping on after the retreating figure. Past the Esbekîya Gardens they went, through several narrow streets, and on to the quarter of the Mûski. Time after time he thought he had lost the carriage ahead, but his own driver’s knowledge of the tortuous streets enabled him always to overtake it again. They went rocking along lanes so narrow that with outstretched arms one could almost have touched the walls on either side; past empty shops and unlighted houses. Cairn had not the remotest idea of his whereabouts, save that he was evidently in the district of the bazaars. A right-angled corner was abruptly negotiated—and there, ahead of him, stood the pursued vehicle! The driver was turning his horses around, to return; his fare was disappearing from sight into the black shadows of a narrow alley on the left.
Cairn leaped from the arabîyeh, shouting to the man to wait, and went dashing down the sloping lane after the retreating figure. A sort of blind fury possessed him, but he never paused to analyse it, never asked himself by what right he pursued this man, what wrong the latter had done him. His action was wholly unreasoning; he knew that he wished to overtake the wearer of the mask and to tear it from his head; upon that he acted!
He discovered that despite the tropical heat of the night, he was shuddering with cold, but he disregarded this circumstance, and ran on.
The pursued stopped before an iron-studded door, which was opened instantly; he entered as the runner came up with him. And, before the door could be reclosed, Cairn thrust his way in.
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
