"I am obliged to you for coming so promptly, Mr. Chief-inspector," said Prince Rénine, "and I hope that M. Dudouis will not regret having placed you at my disposal."

"At your entire disposal, in addition to two inspectors whom I have left in the square outside and who have been in the case, with me, from the first."

"I shall not detain you for any length of time," said Rénine, "and I will not even ask you to sit down. We have only a few minutes in which to settle everything. You know what it's all about?"

"The sixty thousand-franc notes stolen from M. Guillaume. I have the numbers here."

Rénine ran his eyes down the slip of paper which the chief-inspector handed him and said:

"That's right. The two lists agree."

Inspector Morisseau seemed greatly excited:

"The chief attaches the greatest importance to your discovery. So you will be able to show me?..."

Rénine was silent for a moment and then declared:

"Mr. Chief-inspector, a personal investigation--and a most exhaustive investigation it was, as I will explain to you presently--has revealed the fact that, on his return from Suresnes, the murderer, after replacing the motor-cycle in the shed in the Avenue du Roule, ran to the Ternes and entered this house."