“A private carriage.”

What could it all mean?

I rang at the next door.

“Where are you going, sir?” asked the porter, when he had opened to me.

“To Mme. Duvernoy’s.”

“She has not come back.”

“You are sure?”

“Yes, sir; here’s a letter even, which was brought for her last night and which I have not yet given her.”

And the porter showed me a letter which I glanced at mechanically. I recognised Marguerite’s writing. I took the letter. It was addressed, “To Mme. Duvernoy, to forward to M. Duval.”

“This letter is for me,” I said to the porter, as I showed him the address.