Sime, his breath whistling sibilantly between his clenched teeth, hauled himself through the low passage, with incredible speed. The two worked their way arduously, up the long slope. They saw the blue sky above them.... * * * * * "Something like a huge bat," said Robert Cairn, "crawled out upon the first stage. We both fired--" Dr. Cairn raised his hand. He lay exhausted at the foot of the mound. "He had lighted the incense," he replied, "and was reciting the secret ritual. I cannot explain. But your shots were wasted. We came too late--" "Lady Lashmore--" "Until the Pyramid of Meydum is pulled down, stone by stone, the world will never know her fate! Sime and I have looked in at the gate of hell! Only the hand of God plucked us back! Look!" He pointed to Sime. He lay, pallid, with closed eyes--and his hair was abundantly streaked with white! CHAPTER XX THE INCENSE To Robert Cairn it seemed that the boat-train would never reach Charing Cross. His restlessness was appalling. He perpetually glanced from his father, with whom he shared the compartment, to the flying landscape with its vistas of hop-poles; and Dr. Cairn, although he exhibited less anxiety, was, nevertheless, strung to highest tension. That dash from Cairo homeward had been something of a fevered dream to both men. To learn, whilst one is searching for a malign and implacable enemy in Egypt, that that enemy, having secretly returned to London, is weaving his evil spells around "some we loved, the loveliest and the best," is to know the meaning of ordeal. In pursuit of Antony Ferrara--the incarnation of an awful evil--Dr. Cairn had deserted his practice, had left England for Egypt. Now he was hurrying back again; for whilst he had sought in strange and dark places of that land of mystery for Antony Ferrara, the latter had been darkly active in London! Again and again Robert Cairn read the letter which, surely as a royal command, had recalled them. It was from Myra Duquesne. One line in it had fallen upon them like a bomb, had altered all their plans, had shattered the one fragment of peace remaining to them. In the eyes of Robert Cairn, the whole universe centred around Myra Duquesne; she was the one being in the world of whom he could not bear to think in conjunction with Antony Ferrara. Now he knew that Antony Ferrara was beside her, was, doubtless at this very moment, directing those Black Arts of which he was master, to the destruction of her mind and body--perhaps of her very soul. Again he drew the worn envelope from his pocket and read that ominous sentence, which, when his eyes had first fallen upon it, had blotted out the sunlight of Egypt. "... And you will be surprised to hear that Antony is back in London ... and is a frequent visitor here. It is quite like old times...." Raising his haggard eyes, Robert Cairn saw that his father was watching him.