"That amounts to saying that you are going upon a supposition?"

Rénine did not reply. Not until some time later, when lunch was over, did he say:

"Obviously I am going upon a supposition. If I had several days before me, I should take the trouble of first verifying my theory, which is based upon intuition quite as much as upon a few scattered facts. But I have only two hours; and I am embarking on the unknown path as though I were certain that it would lead me to the truth."

"And suppose you are wrong?"

"I have no choice. Besides, it is too late. There's a knock. Oh, one word more! Whatever I may say, don't contradict me. Nor you, M. Dutreuil."

He opened the door. A thin man, with a red imperial, entered:

"Prince Rénine?"

"Yes, sir. You, of course, are from M. Dudouis?"

"Yes."

And the newcomer gave his name: "Chief-inspector Morisseau."