“There’s something beyond that wall, and we’re going to find it!” declared Cora.
“Perhaps when the boys come back they won’t have permission to tear it down,” suggested Bess.
“Then we’ll begin our investigations from the other end,” Cora said.
“What other end?” Hazel questioned.
“The cave! I think this passage connects with the cave. That would explain a hiding place for whoever has been playing these tricks on us, and making that strange noise.”
“You mean the cave you accidentally discovered yesterday?” asked Belle.
“Yes,” Cora answered. “I’m sure that has something to do with the mystery. So if Mr. Haight won’t let us open the wall, we may be able to see what is on the other side by going to the cave, and finding the passage that connects with the one which comes out into our bungalow.”
“In that event the stone wall must be movable,” suggested Hazel.
Cora jumped up so suddenly that she disturbed Bess who was leaning against her.
“That’s it! That’s it!” Cora cried. “I wonder we didn’t think of it before. That surely is it!”