“Oh, well,” said the German, with a laugh, “it doesn’t matter. There is no chance of your getting out of Berlin, anyhow. However, since you refuse, it will be necessary to keep more careful watch over you.”

The officer bundled the two boys and the dog into a taxi, and they were soon riding along the streets.

“I am taking you to my home,” said the young officer. “While there, you will be treated as my guests, except that you will always be guarded.”

“We understand,” said Chester quietly.

“Looks natural along here,” said Hal suddenly, nudging Chester.

“It certainly does,” said Chester, with a smile, for he had at that moment recognized the spot where he, Hal, Lieutenant Anderson and Captain Derevaux had met for the first time—the spot where the French and British officer had been set upon by a gang of young thugs.

“What, you have been in Berlin before?” questioned the German officer in some surprise.

“Oh, yes,” said Hal. “We spent one vacation here with my mother.”

He thought it best not to let the German know how they had escaped from the German capital following the outbreak of the war. Chester also made no reference to this.