The most simple Oriental character is full of complexity. Mohammed the dragoman, by birth and education a thief, by nature a sluggard, spared no effort to reach Cairo in the shortest space of time humanly possible. The source of his devotion is obscure. Perhaps it was due to a humble admiration which John Graham's attempt to strangle him could not alter, or perhaps to a motive wholly unconnected with mundane matters. Certain it is that a sort of religious fervour latterly had possessed the man. From being something of a scoffer (for Islam, like other creeds, daily loses adherents), he was become a most devout Believer. To what this should be ascribed I shall leave you to judge. Exhausted, tottering with his giant exertions, he made his way through the tortuous streets of Old Cairo--streets where ancient palaces and mansions of wealthy Turks displayed their latticed windows, and, at that hour, barred doors to the solitary, panting wayfarer. Upon one of these barred doors he beat. It was that of an old palace which seemed to be partially in ruins. After some delay, the door was opened and Mohammed admitted. The door was reclosed. And, following upon the brief clamour, silence claimed the street again. Much precious time had elapsed since Eileen Graham's disappearance from the hotel by the Pyramids, when a belated and not too sober Greek, walking in the direction of Cairo, encountered what his muddled senses proclaimed to be an apparition--that of a white-robed figure upon a snow-white camel, which sped, silent, and with arrow-like swiftness, past him towards Gizeh. About this vision of the racing camel (a more beautiful creature than any he had seen since the last to carry the Mahmal), about the rider, spectral in the moonlight, white-bearded, there was that which suggested a vision of the Moslem Prophet. Ere the frightened Greek could gather courage to turn and look after the phantom rider, man and camel were lost across the sands. Mena House was in an uproar. No one beneath its roof had thought of sleep that night. Futile searches were being conducted in every direction, north, south, east, and west. Graham, feeling that another hour of inactivity would spell madness, had succumbed to the fever to be up and doing, and had outdistanced all, had left the boy far behind and was mercilessly urging his poor little mount out into the desert, well knowing that in all probability he was riding further and further away from the one he sought, yet madly pressing on. He felt that to stop was to court certain insanity; he must press on and on; he must search--search. His mood had changed, and from cursing fate, heaven, everything and every one, he was come to prayer.