Page:Air Service Boys Over Enemy's Lines.djvu/184

176 fastened on the outside to prevent their having communication. But the girl had found a way. Night after night she was accustomed to slipping from her window, when everything was quiet below and the lights all out, making her way along that narrow coping, or ledge, and tapping softly at the window of her mother's room.

They would remain together until toward morning, when the girl made it a practice to return by the same perilous route.

On this particular night it had seemed as though the lights below would never go out. Carl Potzfeldt, the master spy, expecting important news and a messenger from the headquarters of the Crown Prince, had been waiting up until long after midnight in order to fullfil the important duties entrusted to him.

Jack suggested that he creep along that coping and inform the lady of the golden chance for escape that had arrived. But as she would hardly be able to return by the same way, it seemed as though some other scheme must be considered.

Bessie herself had a brilliant thought bordering on an inspiration.

"Listen, and I will tell you," she said at this juncture. "All the time I have been here my one thought has been of escape. I dreamed