I entered the shop alone, Wheeler keeping watch in the street. I stood at the counter while Madame Lourbet served a customer, and then she turned to me.

"What do you require, monsieur?"

"A little information, madame."

"Well, monsieur?"

"In private, madame," I said, "unless you wish all the world to know."

She gathered from my tone that I had not come as a friend, and she was instantly on her guard.

"What is it, monsieur, that I should not wish all the world to know?"

"I advise that we speak in private," I replied.

"If I r-refuse, monsieur?"

"You will take the consequences, and we will converse before your customers."