“Yes, and I don’t see a sign of the man,” Jim replied.

“Let me take a look,” Don directed briefly.

When he had been hoisted up he made the same observation that Jim had. The three boys were puzzled.

“Confound that fire!” growled Terry. “If it hadn’t been for that we would know what was going on.”

“It doesn’t look very good to me,” observed Jim.

They waited for a moment, undecided as to what to do. The only sound that reached their ears was the sound of men in the nearby garage, who had put out the unexpected fire and who were talking about it. They were not near enough to cause the cadets any misgivings, however.

“Give me another boost,” said Don, but Jim caught his arm in a firm grasp.

“Listen!” commanded his brother.

There had been a faint sound near them, along the wall, the sound as of a small stick breaking. There was no further noise but they had heard that one plainly. A suspicion leaped into Don’s mind.

“Maybe someone saw us and they are after us,” he whispered.