The cadet came across the campus from the direction of the old hall and saluted Don briskly. He said that there was nothing to report.
“I’m a little sorry to have you relieve me,” he smiled. “Although I’m getting tired of tramping up and down. Nice night, isn’t it?”
Don said that it was, and after saying goodnight to Arthurs he commenced his patrol. His way led him across the grassy campus back of the school, back of the gloomy old hall and down the slope near the lake to the iron gate at the east end of the school grounds. He made his first trip and found that it took him a full five minutes from point to point.
Don rather liked the whole idea. It might be quite useless as far as definite results went, but it was fun and a touch of the life which interested him. All of the boys would have to take turns at it, and he knew as he paced up and down that other cadets were patrolling on the other three sides of the school. He had been very fortunate in the time, for a fine big moon rode overhead, lighting the country up in a yellow splendor. The night was cool, but not unpleasantly so, and he felt exhilarated as he moved along with a swift, snappy stride.
Each time he passed back of the old hall he looked searchingly at it, but it was deserted and black, seemingly wrapped up in its covering of ivy. Down by the east gate he lost sight of it, and it was a minute or more before he once more walked around back of it. Don had been patrolling for almost forty minutes, and was now down near the gate. Reaching it, he swung around and started on his backward patrol.
He once more came in sight of Clanhammer Hall and started to pass by it. His patrol had taken him some fifty feet back of the hall, close to some small trees, and he entered a patch of black shadows. From force of habit he looked at the old building and then came to a swift halt.
A file of seven men, bending low and obviously keeping in the shadows of the old place, was making its way around the corner of the building. Each of these cadets, whose uniforms Don could plainly make out, held something in his hand. Astonishment seized Don, and although he had a faint notion of what might be going on, he could hardly believe it.
But he knew his duty and he was quite determined to carry that out. It was evident to him that they thought he was still down by the gate. Lowering his rifle he stepped forward and then stopped.
He thought at first that they intended to gather in some corner outside the building, but he found he was mistaken. They had approached a cellar window and the leader raised it and thrust his leg through. Don hurried forward, challenging them sharply.
“Halt! Who goes there?”