"What are you going to do?" The Madison's voice was quavering.

"Shut up, and do as I tell you."

Rhonda Terry had been planning ahead. Mentally she had rehearsed every smallest piece of business in the drama that was to be enacted. There were no lines—at least she hoped there would be none. If there were the tag might be very different from that which she hoped for.

She reached out and grasped a short, stout piece of wood that had been gathered for the fire. Slowly, stealthily, cat-like, she drew herself from her blankets. Trembling, Naomi Madison followed her.

Rhonda rose, the piece of firewood in her hand. She crept toward the back of the unsuspecting sentry. She lifted the stick above the head of the Arab. She swung it far back, and then—

XIII

A GHOST

Orman and Bill West tramped on through the interminable forest. Day after day they followed the plain trail of the horsemen, but then there came a day that they lost it. Neither was an experienced tracker. The trail had entered a small stream, but it had not emerged again directly upon the opposite bank.

Assuming that the Arabs had ridden in the stream bed for some distance either up or down before coming out on the other side, they had crossed and searched up and down the little river but without success. It did not occur to either of them that their quarry had come out upon the same side that they had entered, and so they did not search upon that side at all. Perhaps it was only natural that they should assume that when one entered a river it was for the purpose of crossing it.

The meager food supply that they had brought from camp was exhausted, and they had had little luck in finding game. A few monkeys and some rodents had fallen to their rifles, temporarily averting starvation; but the future looked none too bright. Eleven days had passed, and they had accomplished nothing.