"This place must be built like a castle," Harrison muttered, wondering at the thickness of the walls. The match went out and they groped down in darkness too thick for even the Afghan to pierce. And suddenly both halted in their tracks. Harrison estimated that they had reached the level of the second floor, and through the inner wall came the mutter of voices. Harrison groped for another door, or a peep-hole for spying, but he found nothing of the sort. But straining his ear close to the stone, he began to understand what was being said beyond the wall, and a long-drawn hiss between clenched teeth told him that Khoda Khan likewise understood.
The first voice was Erlik Khan's; there was no mistaking that hollow reverberance. It was answered by a piteous, incoherent whimpering that brought sweat suddenly out on Harrison's flesh.
"No," the Mongol was saying. "I have come back, not from Hell as your barbarian superstitions suggest, but from a refuge unknown to your stupid police. I was saved from death by the steel cap I always wear beneath my coif. You are at a loss as to how you got here?"
"I don't understand!" It was the voice of Joan La Tour, half-hysterical, but undeniably sane. "I remember opening a bottle of wine, and as soon as I drank I knew it was drugged. Then everything faded out—I don't remember anything except great black walls, and awful shapes skulking in the darkness. I ran through gigantic shadowy halls for a thousand years—"
"They were hallucinations of madness, of the juice of the black pomegranate," answered Erlik Khan. Khoda Khan was muttering blasphemously in his beard until Harrison admonished him to silence with a fierce dig of his elbow. "If you had drunk more you would have died like a rabid dog. As it was, you went insane. But I knew the antidote—possessed the drug that restored your sanity."
"Why?" the girl whimpered bewilderedly.
"Because I did not wish you to die like a candle blown out in the dark, my beautiful white orchid. I wish you to be fully sane so as to taste to the last dregs the shame and agony of death, subtle and prolonged. For the exquisite, an exquisite death. For the coarse-fibered, the death of an ox, such as I have decreed for your friend Harrison."
"That will be more easily decreed than executed," she retorted with a flash of spirit.
"It is already accomplished," the Mongol asserted imperturbably. "The executioner has gone to him, and by this time Mr. Harrison's head resembles a crushed egg."
"Oh, God!" At the sick grief and pain in that moan Harrison winced and fought a frantic desire to shout out denial and reassurance.
Then she remembered something else to torture her.
"Khoda Khan! What have you done with Khoda Khan?"
The Afghan's fingers clamped like iron on Harrison's arm at the sound of his name.
"When my men brought you away they did not take time to deal with him," replied the Mongol. "They had not expected to take you alive, and when fate cast you into their hands, they came away in haste. He matters little. True, he killed four of my best men, but that was merely the deed of a wolf. He has no mentality. He and the detective are much alike—mere masses of brawn, brainless, helpless against intellect like mine. Presently I shall attend to him. His corpse shall be thrown on a dung-heap with a dead pig."
"Allah!" Harrison felt Khoda Khan trembling with fury. "Liar! I will feed his yellow guts to the rats!"
Only Harrison's grip on his arm kept the maddened Moslem from attacking the stone wall in an effort to burst through to his enemy. The detective was running his hand over the surface, seeking a door, but only blank stone rewarded him. Erlik Khan had not had time to provide his unfinished house with as many secrets as his rat-runs usually possessed.
They heard the Mongol clap his hands authoritatively, and they sensed the entrance of men into the room. Staccato commands followed in Mongolian, there was a sharp cry of pain or fear, and then silence followed the soft closing of a door. Though they could not see, both men knew instinctively that the chamber on the other side of the wall was empty. Harrison almost strangled with a panic of helpless rage. He was penned in these infernal walls and Joan La Tour was being borne away to some abominable doom.
"Come on!" snarled Harrison. "There must be another door somewhere!"
