To my amazement the fat man's anger vanished utterly. He stared hard at me, then took off his spectacles and polished them with his handkerchief. After this he said nonchalantly: "Everybody get outside except this gentleman!" The sentry, who had spun round on his heel again, seemed about to speak: his voice expired before it came out of his mouth: he saluted, spun round again and followed the rest out of the room.

When the place was cleared I pulled my left brace out of the armhole of my waistcoat and displayed the silver star.

The fat man sprang up.

"The Herr Doktor must excuse me: I am overwhelmed: I had no idea that the Herr Doktor was not one of these tiresome American spies that are overrunning our country. The Herr Doktor will understand.... If the Herr Doktor had but said ..."

"Herr Major," I said, endeavouring to put as much insolence as I could into my voice (that is what a German understands), "I am not in the habit of bleating my business to every fool I meet. Now I must go back to the train."

"The Berlin train has gone, Herr Doktor, but..."

"The Berlin train gone?" I said. "But my business brooks no delay. I tell you I must be in Berlin to-night!"

"There is no question of your taking the ordinary train, Herr Doktor," the fat man replied smoothly, "but unfortunately the special which I had ready for you has been countermanded. I thought you were not coming again."

A special? By Jove! I was evidently a personage of note. But a special would never do! Where the deuce was it going to take me?

"The Berlin train was to have been held back until your special was clear," the Major went on, "but we must stop her at Wesel until you have passed. I will attend to that at once!"