They were all empty.
“He isn’t here!” he exclaimed.
“Perhaps he is in another caravan,” suggested the detective.
“More than likely, for he isn’t in the oasis or we’d see him.”
“Let’s go ahead, then. These poor wretches are badly scared.”
“Very well,” assented Frank, and they returned aboard.
The Pegasus was sent skyward.
When she had risen the seven men arose.
One of them burst out laughing and muttered:
“What a narrow escape! But they failed to penetrate my disguise.”