They walked swiftly, every few yards one or the other of the boys turning to glance behind them to see if they were followed. The night was clear, and the stars were shining brilliantly; hardly a breath of air was stirring. Presently they came within sight of the town, and the sound of the clock on the town hall striking one came faintly to their ears.
"Whew," said Bob, "it's late."
"I should say so," Hugh agreed, "and I was just thinking of everything we have done to-day. We've certainly been busy."
"We may be even busier to-morrow."
"Why so?"
"Well, if we go back to that house again, you can't tell what we'll get into."
"I wonder if we ought to report to the police what we've seen."
"Probably we should," said Bob. "I'd like to go it alone though."
"And so should I. Let's wait a day or two longer anyway."
"I hope it won't be too late then."