“Your Grace was much absorbed,” Duson answered.

Felix was smoking a cigarette, and Mr. Sabin greeted him with a certain grim cordiality.

“Is this permitted—this visit?” he asked, himself selecting a cigarette and motioning his guest to a chair.

“It is even encouraged,” Felix answered.

“You have perhaps some message?”

“None.”

“I am glad to see you,” Mr. Sabin said. “Just now I am a little puzzled. I will put the matter to you. You shall answer or not, at your own discretion.”

“I am ready,” Felix declared.

“You know the difficulty with which I escaped from America,” Mr. Sabin continued. “Every means which ingenuity could suggest seemed brought to bear against me. And every movement was directed, if not from here, from some place in Europe. Well, I arrived here four days ago. I live quite openly, I have even abjured to some extent my incognito. Yet I have not received even a warning letter. I am left absolutely undisturbed.”

Felix looked at him thoughtfully.