“Some one has been here, and lately!” he said, in a tense voice.

The two men exchanged glances.

“Yes,” agreed Frank. “The footprints are proof.”

“Who is it?”

“Perhaps it is Vane.”

But Harding shook his head.

“No,” he said. “I cannot believe that he has had time to get here yet. Moreover, those footprints are those of natives or brigands, and not of white men.”

Frank saw that this was true.

“Upon my word, you are right,” he declared. “What shall we do?”

“Go ahead and learn the worst.”