"Not Arsène Lupin, but Prince Sernine, who, he says, saved his life, and M. Lenormand, with whom, he says, he began a conversation. . . ."

"At the time when I was chief of the detective-service," Lupin broke in. "So you consent to admit."

"Mr. Steinweg," said the magistrate, "do you recognize M. Lenormand?"

"No, but I know that Arsène Lupin and he are one."

"So you consent to speak?"

"Yes . . . but . . . we are not alone."

"How do you mean? There is only my clerk here . . . and the guard . . ."

"Monsieur le Juge d'Instruction, the secret which I am about to reveal is so important that you yourself would be sorry . . ."

"Guard, go outside, please," said M. Formerie. "Come back at once, if I call. Do you object to my clerk, Steinweg?"

"No, no . . . it might be better . . . but, however . . ."