And here they were feeding him, and treating him very nicely indeed! It puzzled Tom, if it did not actually breed suspicion in his mind.

“But then you can’t trust these Huns,” he told himself. “Maybe that chap is out there now waiting to shoot me if I try to slip out of this little office.”

He was not contented to let this question remain in the air. Tom was of that type of young American who dares. He was ready to take a chance.

Besides, he had in his heart that desire, already set forth, to do something to halt the Zeppelin raid over London. And he was serious in this belief that it was possible for him to do something for the Allied cause in memory of the brave American ace who had been killed almost at his side.

When he had finished the meal he glanced forward through the narrow window. At the moment there was nobody in sight on the forward deck. Tom slid along the couch to the door. He put a tentative hand on the knob.

CHAPTER XX—THE STORM BREAKS

He turned the knob very slowly with his left hand. As Tom sat upon the end of the couch he would be behind the door when he opened it. The weapon the commander of the Zeppelin had neglected to take from him was in his right hand, and ready for use.

He gently drew the door toward him. As he had supposed, it was not locked. When it was ajar he waited for what might follow.

Then, through the aperture at the back of the door, he had a view of the narrow cabin to its very end. Sufficient light entered through the several windows of clouded glass to show him that there was nobody in sight. Not even the private who had brought his lunch had lingered here.

Rising swiftly and with the pistol ready in his hand, the young American stepped out of the closet in which he had been confined. There was a small German clock screwed to the wall. It was now almost noon.