Frank rose from his cramped position among the rocks. Joe followed his example. Quietly, they moved toward the entrance of the cave.
The snores of the slumbering men were unbroken. Frank took the lead and tiptoed slowly forward. Step by step, keeping a wary eye on the recumbent forms wrapped in the blankets, the boys made their way into the cave.
Frank remembered where the keys had been thrown, and now he saw them in the sand. The faint glow of the firelight gleamed on them.
The keys were on the side of the fire nearest the men. It would be a delicate job to get possession of them. He bent forward and crawled on hands and knees. Joe came silently behind.
Frank skirted the fire, then groped carefully forward.
There was a mutter from the shadows. One of the men stirred in his sleep.
The boys remained rigid.
The muttering died away. After a long pause, Frank again reached for the keys.
His hands closed over them. He gripped them tightly so that they would not jangle together. Then he moved slowly back onto the rock ledge, the keys safely in his grasp.
The Hardy boys continued their silent jour-
