"How do you know they were Germans?"
"Who else would want to blow up bridges and ammunition factories?"
"Did they intend to do that?"
"That's what that list says," exclaimed Hugh, nettled by the questions the man asked as well as by his odd behavior.
"Well," said the detective, "you take my advice. This is no place for a couple of boys like you to be hanging around. You might get hurt the first thing you know." He glanced about him nervously as though he expected some one else to arrive upon the scene at any moment.
"A man locked us in that room just before you arrived," said Bob. "Then he dashed off in a big gray roadster."
"Well, you'd better get out of here yourselves," said the detective shortly.
"They may come back at any minute and perhaps you'll need help," protested Bob.
"I'll take care of that part of it," exclaimed the detective. "You get out."
Convinced that there was nothing else for them to do, Bob and Hugh started off through the woods, leaving the detective in undisputed possession of the premises. They were greatly puzzled by their recent experience.