"`Well?"

Clarisse rose from her seat, with a passionate movement of her whole being, leant over Lupin and said, in a hollow voice:

"There was nothing in that piece of crystal, nothing, do you understand? No paper, no hiding-place! The whole expedition to Enghien was futile! The murder of Leonard was useless! The arrest of my son was useless! All my efforts were useless!"

"But why? Why?"

"Why? Because what you stole from Daubrecq was not the stopper made by his instructions, but the stopper which was sent to John Howard, the Stourbridge glassworker, to serve as a model."

If Lupin had not been in the presence of so deep a grief, he could not have refrained from one of those satirical outbursts with which the mischievous tricks of fate are wont to inspire him. As it was, he muttered between his teeth:

"How stupid! And still more stupid as Daubrecq had been given the warning."

"No," she said. "I went to Enghien on the same day. In all that business Daubrecq saw and sees nothing but an ordinary burglary, an annexation of his treasures. The fact that you took part in it put him off the scent."

"Still, the disappearance of the stopper... "

"To begin with, the thing can have had but a secondary importance for him, as it is only the model."

"How do you know?"

"There is a scratch at the bottom of the stem; and I have made inquiries in England since."

"Very well; but why did the key of the cupboard from which it was stolen never leave the man-servant's possession? And why, in the second place, was it found afterward in the drawer of a table in Daubrecq's house in Paris?"

"Of course, Daubrecq takes care of it and clings to it in the way in which one clings to the model of any valuable thing. And that is why I replaced the stopper in the cupboard before its absence was noticed. And that also is why, on the second occasion, I made my little Jacques take the stopper from your overcoat-pocket and told the portress to put it back in the drawer."

"Then he suspects nothing?"

"Nothing. He knows that the list is being looked for, but he does not know that Prasville and I are aware of the thing in which he hides it."

Lupin had risen from his seat and was walking up and down the room, thinking. Then he stood still beside Clarisse and asked:

"When all is said, since the Enghien incident, you have not advanced a single step?"

"Not one. I have acted from day to day, led by those two men or leading them, without any definite plan."

"Or, at least," he said, "without any other plan than that of getting the list of the Twenty-seven from Daubrecq."

"Yes, but how? Besides, your tactics made things more difficult for me. It did not take us long to recognize your old servant Victoire in Daubrecq's new cook and to discover, from what the portress told us, that Victoire was putting you up in her room; and I was afraid of your schemes."

"It was you, was it not, who wrote to me to retire from the contest?"

"Yes."

"You also asked me not to go to the theatre on the Vaudeville night?"