He was captured by a German patrol. But by his quick action Harry
Leroy had removed suspicion from the farmer, which was exactly what
he wished to do.

The Germans, rejoicing over their capture, took the young aviator to
the nearest prison camp, and there he was put in custody, together
with some unfortunate French and English. The tide of war had
turned against Harry Leroy.

So it came about that, some time after he had been posted as missing
and when it was surely thought that he was dead, Harry Leroy was
found to be among the living, though a prisoner.

"This will be great news for his sister!" exclaimed Jack, as the
note dropped by the German airman was read over and over again.

"Yes, she'll be delighted," agreed Tom. "We must hurry back and
tell her."

"And that isn't all," went on Jack. "We must try to figure out a
way to rescue Harry."

"You can't do that," declared a French ace, one with whom the air
service boys had often flown.

"Why not?" asked Tom.

"It's out of the question," was the answer. "There has never been a
rescue yet from behind the German lines. Or, if there has been,
it's like a blue moon."