The men trooped out of the cave. Joe, who was left behind, sat down on a box and regarded the lads balefully. However, he said nothing. Gus came back through the passage.

"You might as well be loadin' some of those boxes into the other cars, while we're away," he said. "Take a look in every little while and see that those kids are still tied up."

The man grumbled assent, and followed Gus back down the passage.

The Hardy boys were left alone in the light of the flickering candles ranged about the gloomy cave.

"Well, we've lost out, I guess," remarked Frank bitterly. "If we ever do get back to Bayport it won't be until the auto thieves have all cleared out of here with the cars."

"It doesn't look very bright," sighed Joe.

Suddenly, Frank sat up.

"Say!" he exclaimed. "Did they take your revolver?"

"No. I guess they didn't know I had one."

"They took mine and missed yours. You still have it?"