In the brooding silence of the cavern Bristol McGrath lay staring blankly upward, his soul a seething hell. Fool, fool, to be taken in so easily! Yet, how could he have known? He had never seen De Albor; he had supposed he was a fullblooded negro. Ballville had called him a black beast, but he must have been referring to his soul. De Albor, but for the betraying murk of his eyes, might pass anywhere for a white man.
The presence of those black men meant but one thing: they had followed him and De Albor, had seized Constance as she rushed from the cave. De Albor's evident fear bore a hideous implication; he had said the blacks wanted to sacrifice Constance-now she was in their hands.
"God!" The word burst from McGrath's lips, startling in the stillness, startling to the speaker. He was electrified; a few moments before he had been dumb. But now he discovered he could move his lips, his tongue. Life was stealing back through his dead limbs; they stung as if with returning circulation. Frantically he encouraged that sluggish flow. Laboriously he worked his extremities, his fingers, hands, wrists and finally, with a surge of wild triumph, his arms and legs. Perhaps De Albor's hellish drug had lost some of its power through age. Perhaps McGrath's unusual stamina threw off the effects as another man could not have done. The tunnel door had not been closed, and McGrath knew why; they did not want to shut out the insects which would soon dispose of a helpless body; already the pests were streaming through the door, a noisome horde.
McGrath rose at last, staggering drunkenly, but with his vitality surging more strongly each second. When he tottered from the cave, no living thing met his glare. Hours had passed since the negroes had departed with their prey. He strained his ears for the drum. It was silent. The stillness rose like an invisible black mist around him. Stumblingly he splashed along the rock-trail that led to hard ground. Had the blacks taken their captive back to the death-haunted Manor, or deeper into the pinelands?
Their tracks were thick in the mud: half a dozen pairs of bare, splay feet, the slender prints of Constance's shoes, the marks of De Albor's Turkish slippers. He followed them with increasing difficulty as the ground grew higher and harder.
He would have missed the spot where they turned off the dim trail but for the fluttering of a bit of silk in the faint breeze. Constance had brushed against a tree-trunk there, and the rough bark had shredded off a fragment of her dress. The band had been headed east, toward the Manor. At the spot where the bit of cloth hung, they had turned sharply southward. The matted pine needles showed no tracks, but disarranged vines and branches bent aside marked their progress, until McGrath, following these signs, came out upon another trail leading southward.
Here and there were marshy spots, and these showed the prints of feet, bare and shod. McGrath hastened along the trail, pistol in hand, in full possession of his faculties at last. His face was grim and pale. De Albor had not had an opportunity to disarm him after striking that treacherous blow. Both the octoroon and the blacks of the pinelands believed him to be lying helpless back in Lost Cave. That, at least, was to his advantage.
He kept straining his ears in vain for the drum he had heard earlier in the day. The silence did not reassure him. In a voodoo sacrifice drums would be thundering, but he knew he was dealing with something even more ancient and abhorrent than voodoo.
Voodoo was comparatively a young religion, after all, born in the hills of Haiti. Behind the froth of voodooism rose the grim religions of Africa, like granite cliffs glimpsed through a mask of green fronds. Voodooism was a mewling infant beside the black, immemorial colossus that had reared its terrible shape in the older land through uncounted ages, Zambebwei! The very name sent a shudder through him, symbolic of horror and fear. It was more than the name of a country and the mysterious tribe that inhabited that country; it signified something fearfully old and evil, something that had survived its natural epoch-a religion of the Night, and a deity whose name was Death and Horror.
He had seen no negro cabins. He knew these were farther to the east and south, most of them, huddling along the banks of the river and the tributary creeks. It was the instinct of the black man to build his habitation by a river, as he had built by the Congo, the Nile and the Niger since Time's first gray dawn. Zambebwei! The word beat like a throb of a tom-tom through the brain of Bristol McGrath. The soul of the black man had not changed, through the slumberous centuries. Change might come in the clangor of city streets, in the raw rhythms of Harlem; but the swamps of the Mississippi do not differ enough from the swamps of the Congo to work any great transmutation in the spirit of a race that was old before the first white king wove the thatch of his wattled hut-palace.
Following that winding path through the twilight dimness of the big pines, McGrath did not find it in his soul to marvel that black slimy tentacles from the depths of Africa had stretched across the world to breed nightmares in an alien land. Certain natural conditions produce certain effects, breed certain pestilences of body or mind, regardless of their geographical situation. The river-haunted pinelands were as abysmal in their way as were the reeking African jungles. The trend of the trail was away from the river. The land sloped very gradually upward, and all signs of marsh vanished.
The trail widened, showing signs of frequent use. McGrath became nervous. At any moment he might meet someone. He took to the thick woods alongside the trail, and forced his way onward, each movement sounding cannon-loud to his whetted ears. Sweating with nervous tension, he came presently upon a smaller path, which meandered in the general direction he wished to go. The pinelands were crisscrossed by such paths.
He followed it with greater ease and stealth, and presently, coming to a crook in it, saw it join the main trail. Near the point of junction stood a small log cabin, and between him and the cabin squatted a big black man. This man was hidden behind the bole of a huge pine beside the narrow path, and peering around it toward the cabin. Obviously he was spying on someone, and it was quickly apparent who this was, as John De Albor came to the door and stared despairingly down the wide trail. The black watcher stiffened and lifted his fingers to his mouth as if to sound a far-carrying whistle, but De Albor shrugged his shoulders helplessly and turned back into the cabin again. The negro relaxed, though he did not alter his vigilance.
What this portended, McGrath did not know, nor did he pause to speculate. At the sight of De Albor a red mist turned the sunlight to blood, in which the black body before him floated like an ebony goblin.
A panther stealing upon its kill would have made as much noise as McGrath made in his glide down the path toward the squatting black. He was aware of no personal animosity toward the man, who was but an obstacle in his path of vengeance. Intent on the cabin, the black man did not hear that stealthy approach. Oblivious to all else, he did not move or turn-until the pistol butt descended on his woolly skull with an impact that stretched him senseless among the pine needles. McGrath crouched above his motionless victim, listening. There was no sound near by-but suddenly, far away, there rose a long-drawn shriek that shuddered and died away. The blood congealed in McGrath's veins. Once before he had heard that sound-in the low forest-covered hills that fringe the borders of forbidden Zambebwei; his black boys had turned the color of ashes and fallen on their faces. What it was he did not know; and the explanation offered by the shuddering natives had been too monstrous to be accepted by a rational mind. They called it the voice of the god of Zambebwei.
Stung to action, McGrath rushed down the path and hurled himself against the back door of the cabin. He did not know how many blacks were inside; he did not care. He was berserk with grief and fury.
The door crashed inward under the impact. He lit on his feet inside, crouching, gun leveled hip-high, lips asnarl.
But only one man faced him--John De Albor, who sprang to his feet with a startled cry. The gun dropped from McGrath's fingers. Neither lead nor steel could glut his hate now. It must be with naked hands, turning back the pages of civilization to the red dawn days of the primordial.
With a growl that was less like the cry of a man than the grunt of a charging lion, McGrath's fierce hands locked about the octoroon's throat. De Albor was borne backward by the hurtling impact, and the men crashed together over a camp cot, smashing it to ruins. And as they tumbled on the dirt floor, McGrath set himself to kill his enemy with his bare fingers.
The octoroon was a tall man, rangy and strong. But against the berserk white man he had no chance. He was hurled about like a sack of straw, battered and smashed savagely against the floor, and the iron fingers that were crushing his throat sank deeper and deeper until his tongue protruded from his gaping blue lips and his eyes were starting from his head. With death no more than a hand's breadth from the octoroon, some measure of sanity returned to McGrath.
He shook his head like a dazed bull; eased his terrible grip a trifle, and snarled: "Where is the girl? Quick, before I kill you!"
De Albor retched and fought for breath, ashen-faced. "The blacks!" he gasped. "They have taken her to be the Bride of Zemba! I could not prevent them. They demand a sacrifice. I offered them you, but they said you were paralyzed and would die anyway-they were cleverer than I thought. They followed me back to the Manor from the spot where we left, the Arab in the road-followed us from the Manor to the island.
"They are out of hand-mad with blood-lust. But even I, who know black men as none else knows them, I had forgotten that not even a priest of Zambebwei can control them when the fire of worship runs in their veins. I am their priest and master-yet when I sought to save the girl, they forced me into this cabin and set a man to watch me until the sacrifice is over. You must have killed him; he would never have let you enter here."
With a chill grimness, McGrath picked up his pistol.
"You came here as Richard Ballville's friend," he said unemotionally. "To get possession of Constance Brand, you made devil-worshippers out of the black people. You deserve death for that. When the European authorities that govern Africa catch a priest of Zambebwei, they hang him. You have admitted that you are a priest. Your life is forfeit on that score, too. But it is because of your hellish teachings that Constance Brand is to die, and it's for that reason that I'm going to blow out your brains."
John De Albor shriveled. "She is not dead yet," he gasped, great drops of perspiration dripping from his ashy face. "She will not die until the moon is high above the pines. It is full tonight, the Moon of Zambebwei. Don't kill me. Only I can save her. I know I failed before. But if I go to them, appear to them suddenly and without warning, they'll think it is because of supernatural powers that I was able to escape from the but without being seen by the watchman. That will renew my prestige.
"You can't save her. You might shoot a few blacks, but there would still be scores left to kill you-and her. But I have a plan-yes, I am a priest of Zambebwei. When I was a boy I ran away from my Arab master and wandered far until I came to the land of Zambebwei. There I grew to manhood and became a priest, dwelling there until the white blood in me drew me out in the world again to learn the ways of the white men. When I came to America I brought a Zemba with me-I can not tell you how. "Let me save Constance Brand!" He was clawing at McGrath, shaking as if with an ague. "I love her, even as you love her. I will play fair with you both, I swear it! Let me save her! We can fight for her later, and I'll kill you if I can."
The frankness of that statement swayed McGrath more than anything else the octoroon could have said. It was a desperate gamble-but after all, Constance would be no worse off with John De Albor alive than she was already. She would be dead before midnight unless something was done swiftly. "Where is the place of sacrifice?" asked McGrath.
"Three miles away, in an open glade," answered De Albor. "South on the trail that runs past my cabin. All the blacks are gathered there except my guard and some others who are watching the trail below the cabin. They are scattered out along it, the nearest out of sight of my cabin, but within sound of the loud, shrill whistle with which these people signal one another.
"This is my plan. You wait here in my cabin, or in the woods, as you choose. I'll avoid the watchers on the trail, and appear suddenly before the blacks at the House of Zemba. A sudden appearance will impress them deeply, as I said. I know I can not persuade them to abandon their plan, but I will make them postpone the sacrifice until just before dawn. And before that time I will manage to steal the girl and flee with her. I'll return to your hiding-place, and we'll fight our way out together." McGrath laughed. "Do you think I'm an utter fool? You'd send your blacks to murder me, while you carried Constance away as you planned. I'm going with you. I'll hide at the edge of the clearing, to help you if you need help. And if you make a false move, I'll get you, if I don't get anybody else." The octoroon's murky eyes glittered, but he nodded acquiescence.
"Help me bring your guard into the cabin," said McGrath. "He'll be coming to soon. We'll tie and gag him and leave him here." The sun was setting and twilight was stealing over the pinelands as McGrath and his strange companion stole through the shadowy woods. They had circled to the west to avoid the watchers on the trail, and were now following on the many narrow footpaths which traced their way through the forest. Silence reigned ahead of them, and McGrath mentioned this.
"Zemba is a god of silence," muttered De Albor. "From sunset to sunrise on the night of the full moon, no drum is beaten. If a dog barks, it must be slain; if a baby cries, it must be killed. Silence locks the jaws of the people until Zemba roars. Only his voice is lifted on the night of the Moon of Zemba." McGrath shuddered. The foul deity was an intangible spirit, of course, embodied only in legend; but De Albor spoke of it as a living thing. A few stars were blinking out, and shadows crept through the thick woods, blurring the trunks of the trees that melted together in darkness. McGrath knew they could not be far from the House of Zemba. He sensed the close presence of a throng of people, though he heard nothing.
De Albor, ahead of him, halted suddenly, crouching. McGrath stopped, trying to pierce the surrounding mask of interlacing branches.
"What is it?" muttered the white man, reaching for his pistol.
De Albor shook his head, straightening. McGrath could not see the stone in his hand, caught up from the earth as he stooped. "Do you hear something?" demanded McGrath.
De Albor motioned him to lean forward, as if to whisper in his ear. Caught off his guard, McGrath bent toward him-even so he divined the treacherous African's intention, but it was too late. The stone in De Albor's hand crashed sickeningly against the white man's temple. McGrath went down like a slaughtered ox, and De Albor sped away down the path to vanish like a ghost in the gloom.