"Let us reason."

"I do not reason with murderers," replied Tarzan. "I kill."

"I only wish to frighten you, not to kill you," explained Atan Thome, as he continued to edge his way along the wall around the room, holding tightly to Mag-ra's hand.

"Why?" demanded Tarzan.

"Because you have something I want--a route map to Ashair," replied Thome.

"I have no map," said Tarzan, "and once again I tell you that I never heard of Ashair. What is at Ashair that you want?"

"Why quibble, Brian Gregory?" snapped Atan Thome. "You know as well as I do that what we both want in Ashair is The Father of Diamonds. Will you work with me, or shall you continue to lie?"

Tarzan shrugged. "I don't know what you're talking about," he said.

"All right, you fool," growled Thome. "If you won't work with me, you'll not live to work against me." He whipped a pistol from a shoulder holster and levelled it at the ape-man. "Take this!"

"You shan't!" cried Magra, striking the weapon up as Thome pressed the trigger; "you shall not kill Brian Gregory!"

Tarzan could not conceive what impelled this strange woman to intercede in his behalf, nor could Atan Thome, as he cursed her bitterly and dragged her through the doorway into the adjoining room before Tarzan could prevent him.

At the sound of the shot, d'Arnot, on the terrace below, leaped to his feet. "I knew it," he cried. "I knew there was something wrong."

Gregory and Helen rose to follow him. "Stay here, Helen," Gregory commanded; "we don't know what's going on up there.'"

"Don't be silly, Dad," replied the girl; "I'm coming with you."

Long experience had taught Gregory that the easiest way to control his daughter was to let her have her own way, inasmuch as she would have it anyway.

D'Arnot was in the upper hall calling Tarzan's name aloud by the time the Gregorys caught up with him, "I can't tell which room," he said.

"We'll have to try them all," suggested Helen.

Again d'Arnot called out to Tarzan, and this tune the ape-man replied. A moment later the three stepped into the room from which his voice had come to see him trying to open a door in the left hand wall.

"What happened?" demanded d'Arnot, excitedly.

"A fellow tried to shoot me," explained Tarzan. "The woman who sent me the note struck up his gun; then he dragged her into that room and locked the door."

"What are you going to do?" asked Gregory.

"I am going to break down the door and go in after him," replied the ape-man.

"Isn't that rather dangerous?" asked Gregory. "You say the fellow is armed."

For answer Tarzan hurled his weight against the door and sent it crashing into the next room. The ape-man leaped across the threshold. The room was vacant. "They've gone," he said.

"Stairs lead from that verandah to the service court in the rear of the hotel," said d'Arnot. "If we hurry, we might overtake them."

"No," said Tarzan; "let them go. We have Lal Taask. We can learn about the others from him." They turned back to re-enter the room they had just quitted. "We'll question him, and he'll answer." There was a grimness about his tone that, for some reason, made Helen think of a lion.

"If you didn't kill him," qualified d'Arnot.

"Evidently I didn't," replied the ape-man; "he's gone!"

"How terribly mysterious!" exclaimed Helen Gregory.

The four returned to their table on the terrace, all but Tarzan a little nervous and excited. Helen Gregory was thrilled. Here were mystery and adventure. She had hoped to find them in Africa, but not quite so far from the interior. Romance was there, too, at her elbow, sipping a cool drink; but she did not know it. Over the rim of his glass d'Arnot inspected her profile for the thousandth time.

"What did the woman look like?" Helen asked Tarzan.

"Taller than you, very black hair, slender, quite handsome," replied the ape-man.

Helen nodded. "She was sitting at that table at the end of the terrace before you came," she said. "A very foreign looking man was with her."

"That must have been Lal Taask," said Tarzan.

"She was a very striking looking girl," continued Helen. "Why in the world do you suppose she lured you to that room and then ended up by saving your life?"

Tarzan shrugged. "I know why she lured me to the room, but I don't understand why she struck up Atan Thome's hand to save me."

"What did they want of you?" asked d'Arnot.

"They think I am Brian Gregory, and they want a map of the route to Ashair--The Forbidden City.