CHAPTER XVIII

The Auto Thieves The cave-in had imprisoned the Hardy boys. The flashlight revealed not a single opening. The tunnel was blocked up, and for all the boys knew the barrier continued right to the outer cave. “Now we’re in for it,” remarked Joe dubiously. The boys realized that there was nothing to be gained by shouting for help. Even if their cries were heard, which would be unlikely with that solid mass of rock before them, it would only bring the auto thieves upon them. “We’ll have to work fast,” said Frank. “There…