He searched through the lower tiers of caves without avail. The sun had sunk out of sight behind the hills, whose long shadows streamed far eastward across the desert, and deepening shadows filled the caverns. The silence and the mystery began to weigh on Gordon’s nerves. He began to be irked by the feeling that unseen eyes were watching him. Men who live lives of constant peril develop certain obscure faculties or instincts to a keenness unknown to those lapped about by the securities of “civilization.” As he passed through the caves, Gordon repeatedly felt an impulse to turn suddenly, to try to surprise those eyes that seemed to be boring into his back. At last he did wheel suddenly, thumb pressing back the hammer of his rifle, eyes alert for any movement in the growing dusk. The shadowy chambers and passages stood empty before him.

  Once, as he passed a dark passageway he could have sworn he heard a soft noise, like the stealthy tread of a bare, furtive foot. He stepped to the mouth of the tunnel and called, without conviction: “Is that you, Ivan?” He shivered at the silence which followed; he had not really believed it was Al Wazir. He groped his way into the tunnel, rifle poked ahead of him. Within a few yards he encountered a blank wall; there seemed to be no entrance or exit except the doorway through which he had come. And the tunnel was empty, save for himself.

  He returned to the ledge before the caves, in disgust.

  “Hell, am I getting jumpy?”

  But a grisly thought kept recurring to him--recollection of the Bedouins’ belief that a supernatural fiend lurked in these ancient caves and devoured any human foolish enough to be caught there by night. This thought kept recurring, together with the reflection that the Orient held many secrets, which the West would laugh at, but which often proved to be grim realities. That would explain Al Wazir’s mysterious absence: if some fiendish or bestial dweller in the caves had devoured him--Gordon’s speculations revolved about a hypothetical rock-python of enormous size, dwelling for generations, perhaps centuries, in the hills--that would explain the lack of any blood-stains. Abruptly he swore: “Damn! I’m going batty. There are no snakes like that in Arabia. These caves are getting on my nerves.”

  It was a fact. There was a brooding weirdness about these ancient and forgotten caverns that roused uncanny speculations in Gordon’s predominantly Celtic mind. What race had occupied them, so long ago? What wars had they witnessed, against what fierce barbarians sweeping up from the south? What cruelties and intrigues had they known, what grim rituals of worship and human sacrifice? Gordon shrugged his shoulders, wishing he had not thought of human sacrifice. The idea fitted too well with the general atmosphere of these grim caverns.

  Angry at himself, he returned to the big square cavern, which, he remembered, the Arabs called Niss’rosh, The Eagle’s Nest, for some reason or other. He meant to sleep in the caves that night, partly to overcome the aversion he felt toward them, partly because he did not care to be caught down on the plain in case Hawkston or Shalan ibn Mansour arrived in the night. There was another mystery. Why had not they reached the caves, one or both of them? The desert was a breeding-place of mysteries, a twilight realm of fantasy. Al Wazir, Hawkston and Shalan ibn Mansour--had the fabled djinn of the Empty Abodes snatched them up and flown away with them, leaving him the one man alive in all the vast desert? Such whims of imagination played through his exhausted brain, as, too weary to eat, he prepared for the night.

  He put a large rock in the trail, poised precariously, which anyone climbing the path in the dark would be sure to dislodge. The noise would awaken him. He stretched himself on the pile of skins, painfully aware of the stress and strain of his long trek, which had taxed even his iron frame to the utmost. He was asleep almost the instant he touched his rude bed.

  It was because of this weariness of body and mind that he did not hear the velvet-footed approach of the thing that crept upon him in the darkness. He woke only when taloned fingers clenched murderously on his throat and an inhuman voice whinnied sickening triumph in his ear.

  Gordon’s reflexes had been trained in a thousand battles. So now he was fighting for his life before he was awake enough to know whether it was an ape or a great serpent that had attacked him. The fierce fingers had almost crushed his throat before he had a chance to tense his neck muscles. Yet those powerful muscles, even though relaxed, had saved his life. Even so the attack was so stunning, the grasp so nearly fatal, that as they rolled over the floor Gordon wasted precious seconds trying to tear away the strangling hands by wrenching at the wrists. Then as his fighting brain asserted itself, even through the red, thickening mists that were enfolding him, he shifted his tactics, drove a savage knee into a hard-muscled belly, and getting his thumbs under the little finger of each crushing hand, bent them fiercely back. No strength can resist that leverage. The unknown attacker let go, and instantly Gordon smashed a trip-hammer blow against the side of his head and rolled clear as the hard frame went momentarily limp. It was as dark in the cave as the gullet of Hell, so dark Gordon could not even see his antagonist.

  He sprang to his feet, drawing his scimitar. He stood poised, tense, wondering uncomfortably if the thing could see in the dark, and scarcely breathing as he strained his ears. At the first faint sound he sprang like a panther, and slashed murderously at the noise. The blade cut only empty air, there was an incoherent cry, a shuffle of feet, then the rapidly receding pad of hurried footsteps. Whatever it was, it was in retreat. Gordon tried to follow it, ran into a blank wall, and by the time he had located the side door through which, apparently, the creature had fled, the sounds had faded out. The American struck a match and glared around, not expecting to see anything that would give him a clue to the mystery. Nor did he. The rock floor of the cavern showed no footprint.

  What manner of creature he had fought in the dark he did not know. Its body had not seemed hairy enough for an ape, though the head had been a tangled mass of hair. Yet it had not fought like a human being; he had felt its talons and teeth, and it was hard to believe that human muscles could have contained such iron strength as he had encountered. And the noises it had made had certainly not resembled the sounds a man makes, even in combat.

  Gordon picked up his rifle and went out on the ledge. From the position of the stars, it was past midnight. He sat down on the ledge, with his back against the cliff wall. He did not intend to sleep, but he slept in spite of himself, and woke suddenly, to find himself on his feet, with every nerve tingling, and his skin crawling with the sensation that grim peril had crept close upon him.

  Even as he wondered if a bad dream had awakened him, he glimpsed a vague shadow fading into the black mouth of a cave not far away. He threw up his rifle and the shot sent the echoes flying and ringing from cliff to cliff. He waited tensely, but neither saw nor heard anything else.

  After that he sat with his rifle across his knees, every faculty alert. His position, he realized, was precarious. He was like a man marooned on a deserted island. It was a day’s hard ride to the caravan road to the south. On foot it would take longer. He could reach it, unhindered--but unless Hawkston had abandoned the quest, which was not likely, the Englishman’s caravan was moving along that road somewhere. If Gordon met it, alone and on foot--Gordon had no illusions about Hawkston. But there was still a greater danger: Shalan ibn Mansour. He did not know why the shaykh had not tracked him down already, but it was certain that Shalan, scouring the desert to find the man who slew his warriors at the Well of Amir Khan, would eventually run him down. When that happened, Gordon did not wish to be caught out on the desert, on foot. Here, in the caves, with water, food and shelter, he would have at least a fighting chance. If Hawkston and Shalan should chance to arrive at the same time--that offered possibilities. Gordon was a fighting man who depended on his wits as much as his sword, and he had set his enemies tearing at each other before now. But there was a present menace to him, in the caves themselves, a menace he felt was the solution to the riddle of Al Wazir’s fate. That menace he meant to drive to bay with the coming of daylig
ht.

  He sat there until dawn turned the eastern sky rose and white. With the coming of the light he strained his eyes into the desert, expecting to see a moving line of dots that would mean men on camels. But only the tawny, empty waste levels and ridges met his gaze. Not until the sun was rising did he enter the caves; the level beams struck into them, disclosing features that had been veiled in shadows the evening before.

  He went first to the passage where he had first heard the sinister footfalls, and there he found the explanation to one mystery. A series of hand and foot holds, lightly nitched in the stone of the wall, led up through a square hole in the rocky ceiling into the cave above. The djinn of the caves had been in that passage, and had escaped by that route, for some reason choosing flight rather than battle just then.

  Now that he was rested, he became aware of the bite of hunger, and headed for The Eagle’s Nest, to get his breakfast out of the tins before he pursued his exploration of the caves. He entered the wide chamber, lighted by the early sun which streamed through the door--and stopped dead.

  A bent figure in the door of the store-room wheeled erect, to face him. For an instant they both stood frozen. Gordon saw a man confronting him like an image of the primordial--naked, gaunt, with a great matted tangle of hair and beard, from which the eyes blazed weirdly. It might have been a caveman out of the dawn centuries who stood there, a stone gripped in each brawny hand. But the high, broad forehead, half hidden under the thatch of hair, was not the slanting brow of a savage. Nor was the face, almost covered though it was by the tangled beard.

  “Ivan!” ejaculated Gordon aghast, and the explanation of the mystery rushed upon him, with all its sickening implications. Al Wazir was a madman.

  As if goaded by the sound of his voice, the naked man started violently, cried out incoherently, and hurled the rock in his right hand. Gordon dodged and it shattered on the wall behind him with an impact that warned him of the unnatural power lurking in the maniac’s thews. Al Wazir was taller than Gordon, with a magnificent, broad-shouldered, lean-hipped torso, ridged with muscles. Gordon half turned and set his rifle against the wall, and as he did so, Al Wazir hurled the rock in his left hand, awkwardly, and followed it across the cave with a bound, shrieking frightfully, foam flying from his lips.

  Gordon met him breast to breast, bracing his muscular legs against the impact, and Al Wazir grunted explosively as he was stopped dead in his tracks. Gordon pinioned his arms at his side, and a wild shriek broke from the madman’s lips as he tore and plunged like a trapped animal. His muscles were like quivering steel wires under Gordon’s grasp, that writhed and knotted. His teeth snapped beast-like at Gordon’s throat, and as the American jerked back his head to escape them, Al Wazir tore loose his right arm, and whipped it over Gordon’s left arm and down. Before the American could prevent it, he had grasped the scimitar hilt and torn the blade from its scabbard. Up and back went the long arm, with the sheen of naked steel, and Gordon, sensing death in the lifted sword, smashed his left fist to the madman’s jaw. It was a short terrific hook that traveled little more than a foot, but it was like the jolt of a mule’s kick.

  Al Wazir’s head snapped back between his shoulders under the impact, then fell limply forward on his breast. His legs gave way simultaneously and Gordon caught him and eased him to the rocky floor.

  Leaving the limp form where it lay, Gordon went hurriedly into the store-room and secured the rope. Returning to the senseless man he knotted it about his waist, then lifted him to a sitting position against a natural stone pillar at the back of the cave, passed the rope about the column and tied it with an intricate knot on the other side. The rope was too strong, even for the superhuman strength of a maniac, and Al Wazir could not reach backward around the pillar to reach and untie the knot. Then Gordon set to work reviving the man--no light task, for El Borak, with the peril of death upon him, had struck hard, with the drive and snap of steel-trap muscles. Only the heavy beard had saved the jawbone from fracture.

  But presently the eyes opened and gazed wildly around, flaring redly as they fixed on Gordon’s face. The clawing hands with their long black nails, came up and caught at Gordon’s throat, as the American drew back out of reach. Al Wazir made a convulsive effort to rise, then sank back and crouched, with his unwinking stare, his fingers making aimless motions. Gordon looked at him somberly, sick at his soul. What a miserable, revolting end to dreams and philosophies! Al Wazir had come into the desert seeking meditation and peace and the visions of the ancient prophets; he had found horror and insanity. Gordon had come looking for a hermit-philosopher, radiant with mellow wisdom; he had found a filthy, naked madman.

  The American filled an empty tin with water and set it, with an opened tin of meat, near Al Wazir’s hand. An instant later he dodged, as the mad hermit hurled the tins at him with all his power. Shaking his head in despair, Gordon went into the store-room and broke his own fast. He had little heart to eat, with the ruin of that once-splendid personality before him, but the urgings of hunger would not be denied.

  It was while thus employed that a sudden noise outside brought him to his feet, galvanized by the imminence of danger.

  CHAPTER 5

  It was the rattling fall of the stone Gordon had placed in the path that had alarmed him. Someone was climbing up the winding trail! Snatching up his rifle he glided out on the ledge. One of his enemies had come at last.

  Down at the pool a weary, dusty camel was drinking. On the path, a few feet below the ledge there stood a tall, wiry man in dust-stained boots and breeches, his torn shirt revealing his brown, muscular chest.

  “Gordon!” this man ejaculated, staring amazedly into the black muzzle of the American’s rifle. “How the devil did you get here?” His hands were empty, resting on an outcropping of rock, just as he had halted in the act of climbing. His rifle was slung to his back, pistol and scimitar in their scabbards at his belt.

  “Put up your hands, Hawkston,” ordered Gordon, and the Englishman obeyed.

  “What are you doing here?” he repeated. “I left you in el-Azem--”

  “Salim lived long enough to tell me what he saw in the hut by Mekmet’s Pool. I came by a road you know nothing about. Where are the other jackals?”

  Hawkston shook the sweat-beads from his sun-burnt forehead. He was above medium height, brown, hard as sole-leather, with a dark hawk-like face and a high-bridged predatory nose arching over a thin black mustache. A lawless adventurer, his scintillant grey eyes reflected a ruthless and reckless nature, and as a fighting man he was as notorious as was Gordon--more notorious in Arabia, for Afghanistan had been the stage for most of El Borak’s exploits.

  “My men? Dead by now, I fancy. The Ruweila are on the war-path. Shalan ibn Mansour caught us at Sulaymen’s Well, with fifty men. We made a barricade of our saddles among the palms and stood them off all day. Van Brock and three of our camel-drivers were killed during the fighting, and Krakovitch was wounded. That night I took a camel and cleared out. I knew it was no use hanging on.”

  “You swine,” said Gordon without passion. He did not call Hawkston a coward. He knew that not cowardice, but a cynical determination to save his skin at all hazards had driven the Englishman to desert his wounded and beleaguered companions.

  “There wasn’t any use for us all to be killed,” retorted Hawkston. “I believed one man could sneak away in the dark and I did. They rushed the camp just as I got clear. I heard them killing the others. Ortelli howled like a lost soul when they cut his throat--I knew they’d run me down long before I could reach the Coast, so I headed for the caves--northwest across the open desert, leaving the road and Khosru’s Well off to the south. It was a long, dry ride, and I made it more by luck than anything else. And now can I put my hands down?”

  “You might as well,” replied Gordon, the rifle at his shoulder never wavering. “In a few seconds it won’t matter much to you where your hands are.”

  Hawkston’s expression did not change. He lowered his h
ands, but kept them away from his belt.

  “You mean to kill me?” he asked calmly.

  “You murdered my friend Salim. You came here to torture and rob Al Wazir. You’d kill me if you got the chance. I’d be a fool to let you live.”

  “Are you going to shoot me in cold blood?”

  “No. Climb up on the ledge. I’ll give you any kind of an even break you want.”

  Hawkston complied, and a few seconds later stood facing the American. An observer would have been struck by a certain similarity between the two men. There was no facial resemblance, but both were burned dark by the sun, both were built with the hard economy of rawhide and spring steel, and both wore the keen, hawk-like aspect which is the common brand of men who live by their wits and guts out on the raw edges of the world.

  Hawkston stood with his empty hands at his sides while Gordon faced him with rifle held hip-low, but covering his midriff.

  “Rifles, pistols or swords?” asked the American. “They say you can handle a blade.”