Late in the afternoon the distant rattle of drums was heard, and soon the battalion, dusty and hot, came into view, making a splendid showing as it swung up the broad roadway leading to the Hall.

“Here they come!” cried Sam.  But he had not any heart to meet his friends, and kept out of sight until the young cadets came to a halt and were dismissed for the last time by Captain Putnam and Major Colby.

“Well, this is certainly strange,” said Larry Colby, as he came up to Dick.  “What was the row in the barn about?”

“I’ll have to tell you some other time, Larry,” was Dick’s answer.  “There has been trouble and Captain Putnam wants to get at the bottom of it.”

“Somebody said you had been locked up for robbing a jewelry shop.”

“There has been a robbery and we were suspected.  But we were not locked up.”

As soon as he was able to do so, Captain Putnam learned the names of the twelve cadets who had been on picket duty between midnight and six o’clock that morning.  These cadets were marched to one of the classrooms and interviewed one at a time in the captain’s private office.

From the first six cadets to go in but little was learned.  One cadet, when told that something of a very serious nature had occurred—­something which was not a mere school lark and could not be overlooked—­confessed that he had allowed two cadets to slip out of camp and come back again with two capfuls of apples taken from a neighboring orchard.

“But I can’t tell their names, Captain Putnam,” the cadet added.

“How long were they gone, Beresford?”

“Not over fifteen or twenty minutes.”

“Did you see the apples?”

“Yes, sir, I—­er—­ate two of them.”

“And you allowed nobody else to pass?”

“No, sir.”

“Very well; you may go,” and Beresford went, thankful that he had not been reprimanded for neglect of duty.  Had the thing occurred in the middle of the term the reprimand would surely have been forthcoming.

The next cadet to come in was Link Smith, who showed by his general manner that he was much worried.  Captain Putnam knew Smith thoroughly and also remembered that the feeble-minded cadet was a fellow easily led astray.

“Smith, you were on guard duty from twelve o’clock to two last night,” he began severely.

“Yes, sir,” answered Link Smith, with an inward shiver.

“Did you fall asleep on your post during that time?”

“No, sir—­that is, I don’t think I did.”

“What do you mean by saying you don’t think you did?”

“I—­that is—­I was awfully sleepy and could scarcely keep my eyes open.  I—­I sat down on a rock for a little while.”

“And slept?

“I—­I think not.”

“Was that before or after you allowed an outsider to get into our camp?”

“Oh, Captain Putnam, how did you know I let somebody in?  I—­that is—­I mean, who said I let anybody in?” stammered poor Smith, taken completely off his guard.