"Why, certainly, I thought you knew her," and he looked at me curiously, "the Princess Dolgorouki Sliniski. Her husband, the Prince, is attached to the Emperor's household. She is travelling with her two boys and their German tutor. The old gentleman with the white mustache now talking to her is the Russian Ambassador. And you only met her on the train? Old Azarian told me you knew her intimately."

"Azarian!" I was groping round in the fog now.

"Yes—your room-mate. He is an Armenian and one of the richest bankers in Russia. He lends money to the Czar. His brother got on with you at Cologne. There they go together to look after their luggage—they have an agency here, although their main bank is in St. Petersburg. The brother had the compartment next to that woman, with the big dog. She is the wife of a rich brewer in Cologne, and just think—we must always give that brute a compartment when she travels. Is it not outrageous? It is against the rules, but the orders come from up above"—and he jerked his finger meaningly over his shoulder.

The fog was so thick now I could cut it with a knife.

"One moment, please," I said, and I laid my hand on his elbow and looked him searchingly in the eye. I intended now to clear things up. "Was there a circus troupe on the train last night?"

"No." The answer came quite simply, and I could see it was the truth.

"Nor one expected?"

"No. There was a circus, but it went through last week."

SAMMY