"Who goes there?"

"Public Safety," replied Chauvelin. "Who are you?"

"Of the Sûreté," was the counter reply. "There are a dozen of us about here."

"When did you arrive?"

"Some two hours ago. We marched out directly after you left the orders at the Commissariat."

"You are prepared to remain on the watch all night?"

"Those are our orders, citizen," replied the man.

"You had best close up and round the house, then. And, name of a dog!" he added, with a threatening ring in his voice. "Let there be no slackening of vigilance this night. No one to go in or out of the house, no one to approach it under any circumstances whatever. Is that understood?"

"Those were our orders from the first, citizen," said the man simply.

"And all has been well up to now?"

"We have seen no one, citizen."

The little party closed in around their chief and together they marched up to the house. Chauvelin, on tenterhooks, walked quicker than the others. He was the first to reach the door. Unable to find the bell-pull in the dark, he knocked vigorously.

The house appeared silent and wrapped in sleep. No light showed from within save that one tiny speck through the cracks of an ill-fitting shutter, in a room immediately overhead.

In response to Chauvelin's repeated summons there came anon the sound of someone moving in one of the upstairs rooms, and presently the light overhead disappeared, whilst a door above was heard to open and to close and shuffling footsteps to come slowly down the creaking stairs.

A moment or two later the bolts and bars of the front door were unfastened, a key grated in the rusty lock, a chain rattled in its socket, and then the door was opened slowly and cautiously.

The woman Leridan appeared in the doorway. She held a guttering tallow candle high above her head. It's flickering light illumined Chauvelin's slender figure.

"Ah, the citizen Representative!" the woman ejaculated, as soon as she recognized him. "We did not expect you again to-day, and at this late hour, too! I'll tell my man-"

"Never mind your man," broke in Chauvelin impatiently, and pushed without ceremony past the woman inside the house. "The child? Is it safe?"

He could scarcely control his excitement. There was a buzzing, as of an angry sea, in his ears. The next second, until the woman spoke, seemed like a cycle of years.

"Quite safe, citizen," she said placidly. "Everything it quite safe. We were so thankful for those men of the Sûreté. We had been afraid before, as I told the citizen Representative, and my man and I could not rest for anxiety. It was only after they came that we dared go to bed."

A deep sigh of intense relief came from the depths of Chauvelin's heart. He had not realized himself until this moment how desperately anxious he had been. The woman's reassuring words appeared to lift a crushing weight from his mind. He turned to the man behind him.

"You did not tell me," he said, "that some of you had been here already."

"We have not been here before," the sergeant in charge of the little platoon said in reply. "I do not know what the woman means."

"Some of your men came about three hours ago," the woman retorted; "less than an hour after the citizen Representative was here. I remember that my man and I marvelled how quickly they did come, but they said that they had been on duty at the Barrière du Combat when the citizen arrived, and that he had dispatched them off at once. They said they had run all the way. But even so, we thought it was quick work-"

The words were smothered in her throat in a cry of pain, for, with an almost brutal gesture, Chauvelin had seized her by the shoulders.

"Where are those men?" He queried hoarsely. "Answer!"

"In there and in there," the woman stammered, wellnigh fainting with terror as she pointed to two doors, one on each side of the passage. "Three in each room. They are asleep now, I should say, as they seem so quiet. But they were an immense comfort to us, citizen... we were so thankful to have them in the house..."

But Chauvelin had snatched the candle from her hand. Holding it high above his head, he strode to the door on the right of the passage. It was ajar. He pushed it open with a vicious kick. The room beyond was in total darkness.

"Is anyone here?" he queried sharply.

Nothing but silence answered him. For a moment he remained there on the threshold, silent and immovable as a figure carved to stone. He had just a sufficiency of presence of mind and of will power not to drop the candle, to stand there motionless, with his back turned to the woman and to the men who had crowded in his wake. He would not let them see the despair, the rage and grave superstitious fear, which distorted every line of his pallid face.

He did not ask about the child. He would not trust himself to speak, for he had realized already how completely he had been baffled. Those abominable English spies had watched their opportunity, had worked on the credulity and the fears of the Leridans and, playing the game at which they and their audacious chief were such unconquerable experts, they had made their way into the house under a clever ruse.

The men of the Sûreté, not quite understanding the situation, were questioning the Leridans. The man, too, corroborated his wife's story. Their anxiety had been worked upon at the moment that it was most acute. After the citizen Representative left them, earlier in the evening, they had received another mysterious message which they had been unable to read, but which had greatly increased their alarm. Then when the men of the Sûreté came... Ah! they had no cause to doubt that they were men of the Sûreté!... their clothes, speech, their appearance... figure to yourself, even their uniforms! They spoke so nicely, so reassuringly. The Leridans were so thankful to see them! Then they made themselves happy in the two rooms below, and for additional safety the Lannoy child was brought down from its attic and put to sleep in the one room with the men of the Sûreté.

After that the Leridans went to bed. Name of a dog! how were they to blame? Those men and the child had disappeared, but they (the Leridans) would go to the guillotine swearing that they were not to blame.

Whether Chauvelin heard all these jeremiads, he could not afterwards have told you. But he did not need to be told how it had all been done. It had all been so simple, so ingenious, so like the methods usually adopted by that astute Scarlet Pimpernel! He saw it all so clearly before him - he, who alone knew and understood the adversary with whom he had to deal.

But these people here should not have the gratuitous spectacle of a man enduring the torments of disappointment and of baffled revenge. Whatever Chauvelin was suffering now would for ever remain the secret of his own soul. Anon, when the Leridans' rasping voices died away in one of the more distant portions of the house and the men of the Sûretè were busy accepting refreshment and gratuity from the two terrified wretches, he had put down the candle with a steady hand and then walked with a firm step out of the house.

Soon the slender figure was swallowed up int eh gloom as he strode back rapidly towards the city.

Chapter XII:

Citizen Fouquier-Tinville had returned home from the Palais at a very late hour that same evening. His household in his simple lodgings in the Place Dauphine was already abed: his wife and the twins were asleep. He himself had sat down for a moment in the living-room, in dressing-gown and slippers, and with the late edition of the Moniteur in his hand, too tired to read.