possible. Now, have you any idea how you are to go about the
accomplishment of your mission, whatever it is?"

"No," said Hal, "I haven't. We shall act in accordance with
developments."

"Well," said Block, "you may as well be going. The sooner you get
there the better. I shall go with you to your train. You will have to
show no passports until you get to the frontier."

At the station, Block saw them comfortably installed in a car that
would carry them across the border. He shook hands with them.

"Good luck," he said quietly; and added: "Should you, by any chance,
come out of Germany a jump ahead of a bayonet, remember you will find
temporary, safety in my quarters. Good-bye."





CHAPTER V

THE GAME OPENS

"You may pass, gentlemen."

The speaker was a German officer. Upon the arrival of the three
friends at the railroad terminus just across the German border the
officer had made a tour of the train, examining the passports of the