In the darkness he could not see whether there were the imprints of other sandals than Tara’s—­only that the dust was disturbed—­and when it led him into gloomy corridors he lost the trail altogether.  A perfect labyrinth of passages and apartments were now revealed to him as he hurried on through the deserted quarters of O-Mai.  Here was an ancient bath—­doubtless that of the jeddak himself, and again he passed through a room in which a meal had been laid upon a table five thousand years before—­the untasted breakfast of O-Mai, perhaps.  There passed before his eyes in the brief moments that he traversed the chambers, a wealth of ornaments and jewels and precious metals that surprised even the Jed of Gathol whose harness was of diamonds and platinum and whose riches were the envy of a world.  But at last his search of O-Mai’s chambers ended in a small closet in the floor of which was the opening to a spiral runway leading straight down into Stygian darkness.  The dust at the entrance of the closet had been freshly disturbed, and as this was the only possible indication that Gahan had of the direction taken by the abductor of Tara it seemed as well to follow on as to search elsewhere.  So, without hesitation, he descended into the utter darkness below.  Feeling with a foot before taking a forward step his descent was necessarily slow, but Gahan was a Barsoomian and so knew the pitfalls that might await the unwary in such dark, forbidden portions of a jeddak’s palace.

He had descended for what he judged might be three full levels and was pausing, as he occasionally did, to listen, when he distinctly heard a peculiar shuffling, scraping sound approaching him from below.  Whatever the thing was it was ascending the runway at a steady pace and would soon be near him.  Gahan laid his hand upon the hilt of his sword and drew it slowly from its scabbard that he might make no noise that would apprise the creature of his presence.  He wished that there might be even the slightest lessening of the darkness.  If he could see but the outline of the thing that approached him he would feel that he had a fairer chance in the meeting; but he could see nothing, and then because he could see nothing the end of his scabbard struck the stone side of the runway, giving off a sound that the stillness and the narrow confines of the passage and the darkness seemed to magnify to a terrific clatter.

Instantly the shuffling sound of approach ceased.  For a moment Gahan stood in silent waiting, then casting aside discretion he moved on again down the spiral.  The thing, whatever it might be, gave forth no sound now by which Gahan might locate it.  At any moment it might be upon him and so he kept his sword in readiness.  Down, ever downward the steep spiral led.  The darkness and the silence of the tomb surrounded him, yet somewhere ahead was something.  He was not alone in that horrid place—­another presence that he could not hear or see hovered before him—­of