“Unfortunately, though they have given me cognisance of certain names . . . certain movements . . . enough, I think, to thwart their projected coup for the moment, it would only be for the moment, and still leaves me in ignorance of the identity of the Scarlet Pimpernel.”

“La! my friend,” she said, with the same assumed flippancy of manner, “then you are where you were before, aren’t you? and you can let me enjoy the last strophe of the aria. Faith!” she added, ostentatiously smothering an imaginary yawn, “had you not spoken about my brother . . .”

“I am coming to him now, citoyenne. Among the papers there was a letter to Sir Andrew Ffoulkes, written by your brother, St. Just.”

“Well? And?”

“That letter shows him to be not only in sympathy with the enemies of France, but actually a helper, if not a member, of the League of the Scarlet Pimpernel.”

The blow had been struck at last. All along, Marguerite had been expecting it; she would not show fear, she was determined to seem unconcerned, flippant even. She wished, when the shock came, to be prepared for it, to have all her wits about her—those wits which had been nicknamed the keenest in Europe. Even now she did not flinch. She knew that Chauvelin had spoken the truth; the man was too earnest, too blindly devoted to the misguided cause he had at heart, too proud of his countrymen, of those makers of revolutions, to stoop to low, purposeless falsehoods.

That letter of Armand’s—foolish, imprudent Armand—was in Chauvelin’s hands. Marguerite knew that as if she had seen the letter with her own eyes; and Chauvelin would hold that letter for purposes of his own, until it suited him to destroy it or to make use of it against Armand. All that she knew, and yet she continued to laugh more gaily, more loudly than she had done before.

“La, man!” she said, speaking over her shoulder and looking him full and squarely in the face, “did I not say it was some imaginary plot. . . . Armand in league with that enigmatic Scarlet Pimpernel! . . . Armand busy helping those French aristocrats whom he despises! . . . Faith, the tale does infinite credit to your imagination!”

“Let me make my point clear, citoyenne,” said Chauvelin, with the same unruffled calm, “I must assure you that St. Just is compromised beyond the slightest hope of pardon.”

Inside the orchestra box all was silent for a moment or two. Marguerite sat, straight upright, rigid and inert, trying to think, trying to face the situation, to realise what had best be done.