Motionless and tragic in her sorrow, she stammered:

"To-night?"

"Yes. I have prepared everything. In two hours, Daubrecq will be in my hands. To-night, whatever means I have to employ, he shall speak."

"Do you mean that?" she asked, faintly, while a ray of hope began to light up her face.

"He shall speak. I shall have his secret. I shall tear the list of the Twenty-seven from him. And that list will set your son free."

"Too late," Clarisse murmured.

"Too late? Why? Do you think that, in exchange for such a document, I shall not obtain Gilbert's pretended escape?... Why, Gilbert will be at liberty in three days! In three days... "

He was interrupted by a ring at the bell:

"Listen, here are our friends. Trust me. Remember that I keep my promises. I gave you back your little Jacques. I shall give you back Gilbert."

He went to let the Growler and the Masher in and said:

"Is everything ready? Is old Brindebois at the restaurant? Quick, let us be off!"

"It's no use, governor," replied the Masher.

"No use? What do you mean?"

"There's news.

"What news? Speak, man!"

"Daubrecq has disappeared."

"Eh? What's that? Daubrecq disappeared?"

"Yes, carried off from his house, in broad daylight."

"The devil! By whom?"

"Nobody knows... four men... there were pistols fired... The police are on the spot. Prasville is directing the investigations."

Lupin did not move a limb. He looked at Clarisse Mergy, who lay huddled in a chair.

He himself had to bow his head. Daubrecq carried off meant one more chance of success lost...

Soon as the prefect of police, the chief of the criminal-investigation department and the examining-magistrates had left Daubrecq's house, after a preliminary and entirely fruitless inquiry, Prasville resumed his personal search.

He was examining the study and the traces of the struggle which had taken place there, when the portress brought him a visiting-card, with a few words in pencil scribbled upon it.

"Show the lady in," he said.

"The lady has some one with her," said the portress.

"Oh? Well, show the other person in as well."

Clarisse Mergy entered at once and introduced the gentleman with her, a gentleman in a black frock-coat, which was too tight for him and which looked as though it had not been brushed for ages. He was shy in his manner and seemed greatly embarrassed how to dispose of his old, rusty top-hat, his gingham umbrella, his one and only glove and his body generally.

"M. Nicole," said Clarisse, "a private teacher, who is acting as tutor to my little Jacques. M. Nicole has been of the greatest help to me with his advice during the past year. He worked out the whole story of the crystal stopper. I should like him, as well as myself - if you see no objection to telling me - to know the details of this kidnapping business, which alarms me and upsets my plans; yours too, I expect?"

Prasville had every confidence in Clarisse Mergy. He knew her relentless hatred of Daubrecq and appreciated the assistance which she had rendered in the case. He therefore made no dilficulties about telling her what he knew, thanks to certain clues and especially to the evidence of the portress.