As the slave bent over some dish which stood upon the table his ear was not far from the aperture through which Tarzan looked. Apparently from a solid wall, for the Negro had no knowledge of the existence of the niche, came to him in the tongue of his own people, the whispered words: "If you would return to the land of the Wamabo say nothing, but do as I bid you."
The black rolled terrified eyes toward the hangings at his side. The ape-man could see him tremble and for a moment was fearful that in his terror he would betray them. "Fear not," he whispered, "we are your friends."
At last the Negro spoke in a low whisper, scarcely audible even to the keen ears of the ape-man. "What," he asked, "can poor Otobu do for the god who speaks to him out of the solid wall?"
"This," replied Tarzan. "Two of us are coming into this room. Help us prevent this man and woman from escaping or raising an outcry that will bring others to their aid."
"I will help you," replied the Negro, "to keep them within this room, but do not fear that their outcries will bring others. These walls are built so that no sound may pass through, and even if it did what difference would it make in this village which is constantly filled with the screams of its mad people. Do not fear their cries. No one will notice them. I go to do your bidding."
Tarzan saw the black cross the room to the table upon which he placed another dish of food before the feasters. Then he stepped to a place behind the man and as he did so raised his eyes to the point in the wall from which the ape-man's voice had come to him, as much as to say, "Master, I am ready."
Without more delay Tarzan threw aside the hangings and stepped into the room. As he did so the young man rose from the table to be instantly seized from behind by the black slave. The girl, whose back was toward the ape-man and his companion, was not at first aware of their presence but saw only the attack of the slave upon her lover, and with a loud scream she leaped forward to assist the latter. Tarzan sprang to her side and laid a heavy hand upon her arm before she could interfere with Otobu's attentions to the young man. At first, as she turned toward the ape-man, her face reflected only mad rage, but almost instantly this changed into the vapid smile with which Smith-Oldwick was already familiar and her slim fingers commenced their soft appraisement of the newcomer.
Almost immediately she discovered Smith-Oldwick but there was neither surprise nor anger upon her countenance. Evidently the poor mad creature knew but two principal moods, from one to the other of which she changed with lightning-like rapidity.
"Watch her a moment," said Tarzan to the Englishman, "while I disarm that fellow," and stepping to the side of the young man whom Otobu was having difficulty in subduing Tarzan relieved him of his saber. "Tell them," he said to the Negro, "if you speak their language, that we will not harm them if they leave us alone and let us depart in peace."
The black had been looking at Tarzan with wide eyes, evidently not comprehending how this god could appear in so material a form, and with the voice of a white bwana and the uniform of a warrior of this city to which he quite evidently did not belong. But nevertheless his first confidence in the voice that offered him freedom was not lessened and he did as Tarzan bid him.
"They want to know what you want," said Otobu, after he had spoken to the man and the girl.
"Tell them that we want food for one thing," said Tarzan, "and something else that we know where to find in this room. Take the man's spear, Otobu; I see it leaning against the wall in the corner of the room. And you, Lieutenant, take his saber," and then again to Otobu, "I will watch the man while you go and bring forth that which is beneath the couch over against this wall," and Tarzan indicated the location of the piece of furniture.
Otobu, trained to obey, did as he was bid. The eyes of the man and the girl followed him, and as he drew back the hangings and dragged forth the corpse of the man Smith-Oldwick had slain, the girl's lover voiced a loud scream and attempted to leap forward to the side of the corpse. Tarzan, however, seized him and then the fellow turned upon him with teeth and nails. It was with no little difficulty that Tarzan finally subdued the man, and while Otobu was removing the outer clothing from the corpse, Tarzan asked the black to question the young man as to his evident excitement at the sight of the body.
"I can tell you Bwana," replied Otobu. "This man was his father."
"What is he saying to the girl?" asked Tarzan.
"He is asking her if she knew that the body of his father was under the couch. And she is saying that she did not know it."
Tarzan repeated the conversation to Smith-Oldwick, who smiled. "If the chap could have seen her removing all evidence of the crime and arranging the hangings of the couch so that the body was concealed after she had helped me drag it across the room, he wouldn't have very much doubt as to her knowledge of the affair. The rug you see draped over the bench in the corner was arranged to hide the blood stain—in some ways they are not so loony after all."
The black man had now removed the outer garments from the dead man, and Smith-Oldwick was hastily drawing them on over his own clothing. "And now," said Tarzan, "we will sit down and eat. One accomplishes little on an empty stomach." As they ate the ape-man attempted to carry on a conversation with the two natives through Otobu. He learned that they were in the palace which had belonged to the dead man lying upon the floor beside them. He had held an official position of some nature, and he and his family were of the ruling class but were not members of the court.
When Tarzan questioned them about Bertha Kircher, the young man said that she had been taken to the king's palace; and when asked why replied: "For the king, of course."
During the conversation both the man and the girl appeared quite rational, even asking some questions as to the country from which their uninvited guests had come, and evidencing much surprise when informed that there was anything but waterless wastes beyond their own valley.
When Otobu asked the man, at Tarzan's suggestion, if he was familiar with the interior of the king's palace, he replied that he was; that he was a friend of Prince Metak, one of the king's sons, and that he often visited the palace and that Metak also came here to his father's palace frequently. As Tarzan ate he racked his brain for some plan whereby he might utilize the knowledge of the young man to gain entrance to the palace, but he had arrived at nothing which he considered feasible when there came a loud knocking upon the door of the outer room.
For a moment no one spoke and then the young man raised his voice and cried aloud to those without. Immediately Otobu sprang for the fellow and attempted to smother his words by clapping a palm over his mouth.
"What is he saying?" asked Tarzan.
"He is telling them to break down the door and rescue him and the girl from two strangers who entered and made them prisoners. If they enter they will kill us all."
"Tell him," said Tarzan, "to hold his peace or I will slay him."
Otobu did as he was instructed and the young maniac lapsed into scowling silence. Tarzan crossed the alcove and entered the outer room to note the effect of the assaults upon the door. Smith-Oldwick followed him a few steps, leaving Otobu to guard the two prisoners. The ape-man saw that the door could not long withstand the heavy blows being dealt the panels from without. "I wanted to use that fellow in the other room," he said to Smith-Oldwick, "but I am afraid we will have to get out of here the way we came. We can't accomplish anything by waiting here and meeting these fellows. From the noise out there there must be a dozen of them. Come," he said, "you go first and I will follow."
As the two turned back from the alcove they witnessed an entirely different scene from that upon which they had turned their backs but a moment or two before. Stretched on the floor and apparently lifeless lay the body of the black slave, while the two prisoners had vanished completely.