Then came a voice from right before them.

"Surrender!" it cried. "Surrender or you are dead men!"

CHAPTER VI.

THE OLD CASTLE.

Lieutenant Anderson raised a hand.

"We surrender," he said quietly.

The officer approached, a revolver held ready for instant use.

"Dismount!" he ordered shortly.

The four companions slid to the ground. A squad of soldiers surrounded them.

"Search them for arms," was the next command, and they were relieved of their weapons.