Muller raised his head sharply as if his decision had been made, and his kind intelligent eyes grew soft as they rested on the pale face of the stately man before him. “I belong to the Secret Police and I am compelled to find out the secrets of others—not because of my profession—no, because my own nature compels me—I must do it. I have just come from Vienna and I bring the last of the proofs necessary to turn you over to the courts. And yet you are a thousand times better than the coward who stole the honour of your wife and who hid behind the shelter of the law—and therefore, therefore, therefore—” Muller’s voice grew hoarse, then died away altogether.

Kniepp listened with pallid cheeks but without a quiver. Now he spoke, completing the other’s words: “And therefore you wish to save me from the prison or from the gallows? I thank you. What is your name?” The unhappy man spoke as calmly as if the matter scarcely concerned him at all.

The detective told him his name.

“Muller, Muller,” repeated the Councillor, as if he were particularly anxious to remember the name. He held out his hand to the detective. “I thank you, indeed, thank you,” he said with the first sign of emotion he had shown, and then added low: “Do not fear that you will have trouble on my account. They can find me in my home.” With these words he turned away and sat down in his chair again. When Bauer entered the room a few moments later, Kniepp was smoking calmly.

“Now, Muller, I’m ready. Horn will be in in a moment, friend Kniepp; I know you will enjoy his chatter.” The chief led the way out of the room through another door. He could not see the ghastly pale face of the guest he left behind him, for it was almost hidden in a cloud of thick smoke, but Muller turned back once more at the threshold and caught a last grateful glance from eyes shadowed by deep sadness, as the Councillor raised his hand in a friendly gesture.

“Dear Muller, you take so long to get at the point of the story! Don’t you see you are torturing me?” This outburst came from the Chief about an hour later. But the detective would not permit himself to be interrupted in spinning out his story in his own way, and it was nearly another hour before Bauer knew that the man for whose name he had been waiting so long was Leo Kniepp.

The knowledge came as a terrible surprise to him. He was dazed almost. “And I,—I’ve got to arrest him in my own house?” he exclaimed as if horrified. And Muller answered calmly: “I doubt if you will have the opportunity, sir.”

“Muller! Did you, again—”

“Yes, I did! I have again warned an unfortunate. It’s my nature, I can’t seem to help it. But you will find the Councillor in his house. He promised me that.”

“And you believe it?”