The mask of an inane fop had been a good one, and the part consummately well played. No wonder that Chauvelin's spies had failed to detect, in the apparently brainless nincompoop, the man whose reckless daring and resourceful ingenuity had baffled the keenest French spies, both in France and in England. Even last night when Chauvelin went to Lord Grenville's dining-room to seek that daring Scarlet Pimpernel, he only saw that inane Sir Percy Blakeney fast asleep in a corner of the sofa.

Had his astute mind guessed the secret, then? Here lay the whole awful, horrible, amazing puzzle. In betraying a nameless stranger to his fate in order to save her brother, had Marguerite Blakeney sent her husband to his death?

No! no! no! a thousand times no! Surely Fate could not deal a blow like that: Nature itself would rise in revolt: her hand, when it held that tiny scrap of paper last night, would have surely have been struck numb ere it committed a deed so appalling and so terrible.

"But what is it, CHERIE?" said little Suzanne, now genuinely alarmed, for Marguerite's colour had become dull and ashen. "Are you ill, Marguerite? What is it?"

"Nothing, nothing, child," she murmured, as in a dream. "Wait a moment. . .let me think. . .think!. . .You said. . .the Scarlet Pimpernel had gone today. . . . ?"

"Marguerite, CHERIE, what is it? You frighten me. . . ."

"It is nothing, child, I tell you. . .nothing. . .I must be alone a minute--and--dear one. . .I may have to curtail our time together to-day. . . . I may have to go away--you'll understand?"

"I understand that something has happened, CHERIE, and that you want to be alone. I won't be a hindrance to you. Don't think of me. My maid, Lucile, has not yet gone. . .we will go back together. . .don't think of me."

She threw her arms impulsively round Marguerite. Child as she was, she felt the poignancy of her friend's grief, and with the infinite tact of her girlish tenderness, she did not try to pry into it, but was ready to efface herself.

She kissed Marguerite again and again, then walked sadly back across the lawn. Marguerite did not move, she remained there, thinking. . .wondering what was to be done.

Just as little Suzanne was about to mount the terrace steps, a groom came running round the house towards his mistress. He carried a sealed letter in his hand. Suzanne instinctively turned back; her heart told her that here perhaps was further ill news for her friend, and she felt that poor Margot was not in a fit state to bear any more.

The groom stood respectfully beside his mistress, then he handed her the sealed letter.

"What is that?" asked Marguerite.

"Just come by runner, my lady."

Marguerite took the letter mechanically, and turned it over in her trembling fingers.

"Who sent it?" she said.

"The runner said, my lady," replied the groom, "that his orders were to deliver this, and that your ladyship would understand from whom it came."

Marguerite tore open the envelope. Already her instinct told her what it contained, and her eyes only glanced at it mechanically.

It was a letter by Armand St. Just to Sir Andrew Ffoulkes--the letter which Chauvelin's spies had stolen at "The Fisherman's Rest," and which Chauvelin had held as a rod over her to enforce her obedience.

Now he had kept his word--he had sent her back St. Just's compromising letter. . .for he was on the track of the Scarlet Pimpernel.

Marguerite's senses reeled, her very soul seemed to be leaving her body; she tottered, and would have fallen but for Suzanne's arm round her waist. With superhuman effort she regained control over herself--there was yet much to be done.

"Bring that runner here to me," she said to the servant, with much calm. "He has not gone?"

"No, my lady."

The groom went, and Marguerite turned to Suzanne.

"And you, child, run within. Tell Lucile to get ready. I fear that I must send you home, child. And--stay, tell one of the maids to prepare a travelling dress and cloak for me."

Suzanne made no reply. She kissed Marguerite tenderly and obeyed without a word; the child was overawed by the terrible, nameless misery in her friend's face.

A minute later the groom returned, followed by the runner who had brought the letter.

"Who gave you this packet?" asked Marguerite.

"A gentleman, my lady," replied the man, "at `The Rose and Thistle' inn opposite Charing Cross. He said you would understand."

"At `The Rose and Thistle'? What was he doing?"

"He was waiting for the coach, you ladyship, which he had ordered."

"The coach?"

"Yes, my lady. A special coach he had ordered. I understood from his man that he was posting straight to Dover."

"That's enough. You may go." Then she turned to the groom: "My coach and the four swiftest horses in the stables, to be ready at once."

The groom and runner both went quickly off to obey. Marguerite remained standing for a moment on the lawn quite alone. Her graceful figure was as rigid as a statue, her eyes were fixed, her hands were tightly clasped across her breast; her lips moved as they murmured with pathetic heart-breaking persistence,--

"What's to be done? What's to be done? Where to find him?--Oh, God! grant me light."

But this was not the moment for remorse and despair. She had done--unwittingly--an awful and terrible thing--the very worst crime, in her eyes, that woman ever committed--she saw it in all its horror. Her very blindness in not having guessed her husband's secret seemed now to her another deadly sin. She ought to have known! she ought to have known!

How could she imagine that a man who could love with so much intensity as Percy Blakeney had loved her from the first--how could such a man be the brainless idiot he chose to appear? She, at least, ought to have known that he was wearing a mask, and having found that out, she should have torn it from his face, whenever they were alone together.

Her love for him had been paltry and weak, easily crushed by her own pride; and she, too, had worn a mask in assuming a contempt for him, whilst, as a matter of fact, she completely misunderstood him.

But there was no time now to go over the past. By her own blindness she had sinned; now she must repay, not by empty remorse, but by prompt and useful action.

Percy had started for Calais, utterly unconscious of the fact that his most relentless enemy was on his heels. He had set sail early that morning from London Bridge. Provided he had a favourable wind, he would no doubt be in France within twenty-four hours; no doubt he had reckoned on the wind and chosen this route.

Chauvelin, on the other hand, would post to Dover, charter a vessel there, and undoubtedly reach Calais much about the same time. Once in Calais, Percy would meet all those who were eagerly waiting for the noble and brave Scarlet Pimpernel, who had come to rescue them from horrible and unmerited death. With Chauvelin's eyes now fixed upon his every movement, Percy would thus not only be endangering his own life, but that of Suzanne's father, the old Comte de Tournay, and of those other fugitives who were waiting for him and trusting in him. There was also Armand, who had gone to meet de Tournay, secure in the knowledge that the Scarlet Pimpernel was watching over his safety.

All these lives and that of her husband, lay in Marguerite's hands; these she must save, if human pluck and ingenuity were equal to the task.

Unfortunately, she could not do all this quite alone. Once in Calais she would not know where to find her husband, whilst Chauvelin, in stealing the papers at Dover, had obtained the whole itinerary. Above every thing, she wished to warn Percy.

She knew enough about him by now to understand that he would never abandon those who trusted in him, that he would not turn his back from danger, and leave the Comte de Tournay to fall into the bloodthirsty hands that knew of no mercy. But if he were warned, he might form new plans, be more wary, more prudent. Unconsciously, he might fall into a cunning trap, but--once warned--he might yet succeed.

And if he failed--if indeed Fate, and Chauvelin, with all the resources at his command, proved too strong for the daring plotter after all--then at least she would be there by his side, to comfort, love and cherish, to cheat death perhaps at the last by making it seem sweet, if they died both together, locked in each other's arms, with the supreme happiness of knowing that passion had responded to passion, and that all misunderstandings were at an end.

Her whole body stiffened as with a great and firm resolution. This she meant to do, if God gave her wits and strength. Her eyes lost their fixed look; they glowed with inward fire at the thought of meeting him again so soon, in the very midst of most deadly perils; they sparkled with the joy of sharing these dangers with him--of helping him perhaps--of being with him at the last--if she failed.

The childlike sweet face had become hard and set, the curved mouth was closed tightly over her clenched teeth. She meant to do or die, with him and for his sake. A frown, which spoke of an iron will and unbending resolution, appeared between the two straight brows; already her plans were formed. She would go and find Sir Andrew Ffoulkes first; he was Percy's best friend, and Marguerite remembered, with a thrill, with what blind enthusiasm the young man always spoke of his mysterious leader.

He would help her where she needed help; her coach was ready. A change of raiment, and a farewell to little Suzanne, and she could be on her way.

Without haste, but without hesitation, she walked quietly into the house.