They stood in a small square chamber. So far as they could see there was no door or window or other mode of exit.
Only bare walls of stone were about them upon all sides.
“Well!” exclaimed Frank, in amazement. “What the deuce does this mean?”
“Where are we?”
“Sure enough.”
“Can you see any way out of here?”
“I cannot.”
The two men looked at each other blankly. It was some time before either ventured to speak.
“This is the toughest yet,” said Buckden, finally. “What is your idea, Frank?”
A light broke across the young inventor’s handsome face.