It was getting difficult to keep my temper, but I replied quietly:

"You are evidently making a great mistake about me."

"Oh no, I'm not," he laughed, with a knowing shake of the head. "Where did you sleep last night? And who are you?"

"I am going to Berlin," I said. But as the train started at that moment there was nothing to be gained by continuing to wrangle with the man, so I turned away.

Then he said in a less surly tone: "There's no train for two hours. You can wait in the station."

I was glad enough to have the chance, and sitting down on one of the benches in the waiting-room, was soon fast asleep again.

When I woke I saw the reason for his apparent concession. A police officer was with him and had roused me. I blinked at him confusedly.

"Come along with me," he ordered curtly.

"I want to go to Berlin. I must get there without delay."

"Come with me, I tell you," he repeated very sharply. "We must know something about you first."