“But we must capture him. Where do you think he has gone?”
“Come with me and I will answer that question!” said Frank.
The young inventor led the way to the verge of the plateau.
“He went out of sight in this direction,” he said.
“What!” exclaimed the captain, aghast. “You don’t mean to say that he actually leaped over into the valley?”
“I don’t know. I only saw him disappear about here.”
“But I can see no way of climbing down here.”
“Nor I. It may be possible that he committed suicide here, but I doubt it.”
“What then is your opinion?”
“There must be some secret way of getting down the face of the cliff here.”