Thunder rumbled disquietingly off to the east, The wind was rising over the Glades with a violent rustle of grass and leaves. Now that his arm was nerved at last to its terrible task, it behooved him to hurry, ere the rain and thunder stirred the camp.
Noiselessly he crawled forward again. As he did so a ragged dart of lightning glinted evilly in his eyes. With a leap something bounded from the shadows behind him and bore him to the ground.
In the thick pall of darkness, he fought with infernal desperation. The rain came fiercely in great gusts of tearing wind. There was the strength of a madman to-night in Carl's powerful arms. Relentlessly he bore his assailant to the ground and raised his knife. The lightning flared brilliantly again. With a great, choking cry of unutterable horror, Carl fell back and flung his knife away.
"Oh, God!" he cried, shaking. "Philip!" He flung himself face downward on the ground in an agony of abasement.
With a roar of wind and rain the hurricane beat gustily upon the wigwams. Neither man seemed aware of it. Philip, his face white, had risen. Now he stood, tall, rigid, towering above the man upon the ground, who lay motionless save for the shuddering gusts of self-revulsion which swept his tortured body.
It was Philip at last who spoke. Bending he touched the other's shoulder.
"Come," he said. "Diane must not know."
"No," said Carl dully. "No--she must not know. I--I am not myself, Philip, as God is my witness--" He choked, unable to voice the horror in his heart. A man may not raise the knife of death to his one friend and speak of it with comfort.
Rising, Carl stumbled blindly in the wake of the tall figure striding on ahead. They halted at last at a wigwam on the fringe of the camp. Philip lighted a lantern, his white face fixed and expressionless as stone.
"You were going to kill her!" he said abruptly.
"Yes," said Carl. He shuddered.
In the silence the storm battered fiercely at the wigwam.
Philip wheeled furiously.
"What is it?" he demanded. "In God's name what threatens her, that even here in these God-forsaken wilds she is not safe?" He towered grim above the crouching man on the floor of the wigwam. "For months I have guarded her day and night," he went on fiercely, "from some damnable mystery and treachery that has almost muddled my life beyond repair. What is it? Why were you creeping to her wigwam to-night with a knife in your hand?"
Carl flinched beneath the blazing anger and contempt in his eyes. The droning in his head grew suddenly to a roar. The nausea flamed again over his body. For a dizzy interval he confused the noise of the storm with the drone in his head. Philip seized the lantern and bending, stared closely into his white face and haunted eyes.