“I’ve heard of him, but do not know him personally,” was my response.

I had last seen Sir Charles in Brussels, three months before; but his reappearance at Beaulieu showed quite plainly that there was more in progress concerning the pretty Pierrette than even I imagined.

“Then you told Sir Charles Blythe about Monsieur Dumont’s disappearance?” I asked Madame, much interested in this new phase of the affair, and yet at the same time puzzled that Pierrette had apparently not told Bindo about the affair when they met in London.

“Yes,” answered the queer old lady with the rough voice. “He was most sympathetic and interested. He said that he knew one of the chiefs at your Scot-len Yarde, and that he would write to him.”

The idea of an old thief like Blythe writing to Scotland Yard was, to me, distinctly amusing.

Had Bindo sent him to Beaulieu to keep in touch with Pierrette? I wondered. At any rate, I felt that I must contrive to see him in secret and ascertain what really was in progress.

“Sir Charles has, I believe, great influence with the police,” I remarked, with the idea of furthering my friend’s interests, whatever they were. “No doubt he will write home, and whatever can be done to trace Monsieur Dumont will be done.”

“He is extremely courteous to us,” Madame said. “A lady in the hotel tells me that he is very well known on the Riviera.”

“I believe he is. In fact, if I’m not mistaken, he is one of the English members of the Fêtes Committee at Nice.”

“Well, I only hope that he will carry out his kind promise,” declared Pierrette. “He seems to know everybody. Last night he was taking coffee with the Duchess of Gozzano and her friends, who seem a most exclusive set.”