"The sign of the society!" said Petrokine; "and yet we are all present; who can it be?"

The door was thrown open, and a man entered, dusty and travel-stained, but with an air of authority and power stamped on every feature of his harsh but expressive face. He glanced round the table, scanning each countenance carefully. There was a start of surprise in the room. He was evidently a stranger to them all.

"What means this intrusion, sir?" said my friend with the beard.

"Intrusion!" said the stranger. "I was given to understand that I was expected, and had looked forward to a warmer welcome from my fellow-associates. I am personally unknown to you, gentlemen, but I am proud to think that my name should command some respect among you. I am Gustave Berger, the agent from England, bearing letters from the chief commissioner to his well-beloved brothers of Solteff."

One of their own bombs could hardly have created greater surprise had it been fired in the midst of them. Every eye was fixed alternately on me and upon the newly-arrived agent.

"If you are indeed Gustave Berger," said Petrokine, "who is this?"

"That I am Gustave Berger these credentials will show," said the stranger, as he threw a packet upon the table. "Who that man may be I know not; but if he has intruded himself upon the lodge under false pretences, it is clear that he must never carry out of the room what he has learned. Speak, sir," he added, addressing me: "who and what are you?"

I felt that my time had come. My revolver was in my hip-pocket; but what was that against so many desperate men? I grasped the butt of it, however, as a drowning man clings to a straw, and I tried to preserve my coolness as I glanced round at the cold, vindictive faces turned towards me.

"Gentlemen," I said, "the rôle I have played to-night has been a purely involuntary one on my part. I am no police spy, as you seem to suspect; nor, on the other hand, have I the honour to be a member of your association. I am an inoffensive corn-dealer, who by an extraordinary mistake has been forced into this unpleasant and awkward position."

I paused for a moment. Was it my fancy that there was a peculiar noise in the street—a noise as of many feet treading softly? No, it had died away; it was but the throbbing of my own heart.