“Now,” Hartwig said, assuming a firm, determined attitude, “I hope you entirely understand me. I am well aware of the despicable double game you are playing, therefore if you refuse me the information I seek I shall go downstairs and tell them how you are employed by His Excellency General Markoff.”

The traitor’s face was ashen grey. He was, I could see, in wonder at the identity of his visitor. Of course he knew me, but apparently my companion was quite unknown to him. It was always one of Hartwig’s greatest precautions to remain unknown to any except perhaps a dozen or so of the detective police immediately under his direction. From the Secret or Political Police he was always careful to hide his identity, knowing well that by so doing he would gain a free hand in his operations in the detection of serious crime. At his own house, a neat, modest little bachelor abode just outside Petersburg, in the Kulikovo quarter, he was known as Herr Otto Schenk, a German teacher of languages, who, possessing a small income, devoted his leisure to his garden and his poultry. None, not even the agents of Secret Police in the Kulikovo district, who reported upon him regularly each month, even suspected that he was the renowned head of the Sûreté.

Standing there presenting such a bucolic appearance, so typically English, and yet speaking Russian perfectly, he caused Danilovitch much curiosity and apprehension.

Suddenly he asked of the spy:

“You were at Brighton last night? With what motive? Tell me.”

The man hesitated a moment and replied:

“I went there to visit a friend—a compatriot.”

“Yes. Quite true,” exclaimed the great police official, leaning against the end of the narrow iron bedstead. “You went to Brighton with an evil purpose. Shall I tell you why? Because you were sent there by your employer General Markoff—sent there as a paid assassin!”

The fellow started.

“What do you mean?” he gasped.