Sheep was a cant word of the time for a spy, under the gaolers. The spy, who was pale, turned paler, and asked him how he dared--

"I'll tell you," said Sydney. "I lighted on you, Mr. Barsad, coming out of the prison of the Conciergerie while I was contemplating the walls, an hour or more ago. You have a face to be remembered, and I remember faces well. Made curious by seeing you in that connection, and having a reason, to which you are no stranger, for associating you with the misfortunes of a friend now very unfortunate, I walked in your direction. I walked into the wine-shop here, close after you, and sat near you. I had no difficulty in deducing from your unreserved conversation, and the rumour openly going about among your admirers, the nature of your calling. And gradually, what I had done at random, seemed to shape itself into a purpose, Mr. Barsad."

"What purpose?" the spy asked.

"It would be troublesome, and might be dangerous, to explain in the street. Could you favour me, in confidence, with some minutes of your company--at the office of Tellson's Bank, for instance?"

"Under a threat?"

"Oh! Did I say that?"

"Then, why should I go there?"

"Really, Mr. Barsad, I can't say, if you can't."

"Do you mean that you won't say, sir?" the spy irresolutely asked.

"You apprehend me very clearly, Mr. Barsad. I won't."

Carton's negligent recklessness of manner came powerfully in aid of his quickness and skill, in such a business as he had in his secret mind, and with such a man as he had to do with. His practised eye saw it, and made the most of it.

"Now, I told you so," said the spy, casting a reproachful look at his sister; "if any trouble comes of this, it's your doing."

"Come, come, Mr. Barsad!" exclaimed Sydney. "Don't be ungrateful. But for my great respect for your sister, I might not have led up so pleasantly to a little proposal that I wish to make for our mutual satisfaction. Do you go with me to the Bank?"

"I'll hear what you have got to say. Yes, I'll go with you."

"I propose that we first conduct your sister safely to the corner of her own street. Let me take your arm, Miss Pross. This is not a good city, at this time, for you to be out in, unprotected; and as your escort knows Mr. Barsad, I will invite him to Mr. Lorry's with us. Are we ready? Come then!"