The secret of the caves

by Franklin W. Dixon

"Perhaps he's got concussion of the brain."

"In that case, he needs a doctor," Joe said.

"How about Frank?"

But Frank was already sitting up.

"I'm all right," he told them. "I'm just about all in, but I'll be as right as rain in a few minutes. Whew, those waves sure battered me about, I'll tell the world!"

"We never expected to see you come back alive," Chet told him.

"It was pretty bad coming back," Frank admitted. "The captain is heavier than he looks!"

"He's still alive, at any rate."

"Isn't he conscious yet?"

"Not a bit of it. He's breathing, but he's still dead to the world, and there's no sign that he's coming to."