"Your English seems to be all right," answered Ned, speaking slowly and in a low tone. "We are citizens of the United States and are here on a pleasure trip. Our passports will convince you. Will you be pleased to examine them?" he continued, drawing forth a document from his inner pocket. The other boys followed his example.
In a manner that impressed the boys very favorably the officer examined the papers, comparing the descriptions given therein with the lads standing before him. Evidently he was satisfied. Turning to his companion the officer spoke a few words in French, whereat the other turned and made for the monoplane. As he departed the officer said:
"I am sorry to make you trouble, but I have a report that you are German spies. I shall have to place you under guard for a short time while I go for assistance and orders. You will not object?"
"Certainly not!" replied Ned pleasantly. "We will do everything we can to help you to establish our identity. But I wish to ask," he continued, "that you do not let that other fellow get away."
"Why not?" asked the officer in surprise.
"Because we suspect him of having committed a crime in America and it is our purpose to arrest him and have him extradited!"
A look of astonishment came over the officer's face.
"But he gave me the information concerning you!" he protested.