Page:Air Service Boys Flying for Victory.djvu/202

192 seemed to be provided with one, though many of the other doors were not, such things not being in general use in the centuries back, when this ancient pile of stone was built

He turned to his companion and whispered encouragingly.

"She must be in that room, for many feet have passed in and out. Among the footprints close by here are several small, childish ones. We are surely on the right track, Jack."

"H'm! but the door seems to be fast. And I suppose the key is in von Berthold's pocket right now. How in the wide world are we going to get in there to save Helene?"

"We'll settle that," snapped Tom. "There's always a way to do a thing. On either side there's a door. Let's see if one of those happens to be unfastened."

The very first trial brought success, and Jack began to feel a glow of coming good fortune. If they were not interrupted in their work he believed that nothing could long withstand such a determined spirit as Tom always injected into anything he undertook. It accounted for his successes in school sports, and he carried the same characteristic with him into army service.

They passed into the dark recesses of the room that seemed to adjoin the one of the locked door. Jack could see a window ahead, for a certain