Closer and closer he came to his prey. At last he crouched directly behind him. There must be no noise, no outcry. Tarzan waited. Beyond the rim of fire waited Numa, expectant, for he saw that very gradually the flames were diminishing. A bronzed hand shot quickly forward, fingers of steel gripped the brown throat of the sentry almost at the instant that a knife was driven from below his left shoulder blade into his heart. The sentry was dead without knowing that death threatened him, a merciful ending.
Tarzan withdrew the knife from the limp body and wiped the blade upon the once white robe of his victim; then he moved softly toward the prisoner who was lying in the open. For him, they had not bothered to build a shelter. As he made his way toward the man, Tarzan passed close to two of the shelters in which lay members of the band; but he made no noise that might awaken them. When he approached the captive more closely, he saw in the diminishing light of the fire that the man's eyes were open and that he was regarding Tarzan with level, though questioning, gaze. The ape-man put a finger to his lips to enjoin silence, and then he came and knelt beside the man and cut the thongs that secured his wrists and ankles; then he helped him to his feet, for the thongs had been drawn tightly, and his legs were numb.
For a moment he waited while the stranger tested his feet and moved them rapidly in an effort to restore circulation; then he beckoned him to follow, and all would have been well but for Numa, the lion. At this moment, either to voice his anger against the flames or to terrify the horses into a stampede, he elected to voice a thunderous roar.
So close was the lion that the sudden shattering of the deep silence of the night startled every sleeper to wakefulness. A dozen men seized their matchlocks and leaped from their shelters. In the waning light of the fire they saw no lion; but they saw their liberated captive, and they saw Tarzan of the Apes standing beside him.
Among those who ran from the shelters was the least seriously wounded of Tarzan's victims of the afternoon. Instantly recognizing the bronzed white giant, he shouted loudly to his companions, "It is he! It is the white demon who killed our friends today."
"Kill him!" screamed another.
"Kill them both!" cried the leader of the shiftas.
Completely surrounding the two white men, the shiftas advanced upon them; but they dared not fire because of fear that they might wound one of their own comrades. Nor could Tarzan loose an arrow nor cast a spear, for he had left all his weapons except his rope and his knife hidden in the tree above the camp that he might move with the utmost freedom and in silence while seeking to liberate the captive.
One of the bandits, more courageous, probably because less intelligent, than his fellows, rushed to close quarters with musket clubbed. It was his undoing. The man-beast crouched, growling; and, as the other was almost upon him, charged. The musket butt, hurtling through the air to strike him down, he dodged; and then he seized the weapon and wrenched it from the shifta's grasp as though it had been a toy in a child's hands.
Tossing the matchlock at the feet of his companion, Tarzan laid hold upon the rash Galla, spun him around, and held him as a shield against the weapons of his fellows. But despite this reverse the other shiftas gave no indication of giving up the battle. They saw before them two men practically defenseless, and now with redoubled shouts they pushed closer.