If any strangers appear, I'll listen to 'em if they halt near here, or trail them if they try to go past here." Dick nodded.

This seemed about the best that could be done.
Of course, back in camp, he had three more good and courageous fellows to draw upon as added forces, but with such strange doings afoot in the night it didn't seem wise to call the others away from the camp.

Above all, the camp had to be watched and guarded.
In half an hour Dick returned.

He had found nothing to throw light on the puzzle of the night.

Tom was back already, having beaten Dick to Greg's hiding place by about two minutes.
"We may as well go back to camp," whispered Greg.
"Not much!" Prescott retorted.