Voices could be heard, coming nearer and nearer to their hiding place.
Once again the two boys almost stopped breathing while they waited for
the speakers to pass. They could make out two shadowy forms following the
same course taken by the automobile. The two men conversed earnestly
together in tones so low, that the listeners could not overhear what was
said. After a few moments the sound of the voices died away and Hugh and
Bob were left alone. That is, they were alone as far as they could tell.

"Well," said Hugh finally. "They're gone."

"Seems so," admitted Bob. "We can't be sure though."

"Were those men talking German?"

"I couldn't tell."

"Neither could I for sure, but I thought they were."

"Probably so," said Bob. "At any rate it looks to me as if there was some
queer business going on in this place."

"It certainly does. I wonder what's in that house?"

"Shall we go and see?"

"You don't catch me in that house at this time of night," said
Hugh grimly.

"How about coming out here to-morrow, then?"