"Why do you speak of Mam'zelle Mortimer?" he asked, at once grown serious.

"Because you have been flirting with her outrageously all day. You can't deny it," she declared, turning to him in her saddle.

"I was merely pleasant to her," he admitted. "But you English declare that a man is a flirt if he merely extends the most commonplace courtesies to a woman. It is so different in other countries."

"Yes," she laughed. "Here, in England, woman is fortunately respected, but it is not so on the Continent."

"I trust that madame has not found me indiscreet," he said earnestly.

"If I have been, I must crave forgiveness, because I am so unused to English manners."

"I don't think any one need blame you for indiscretion, providing that Muriel does not object."

"Object? I do not follow you," he said.

"Well, she may object to her name being bandied about as a woman with whom you are carrying on an open flirtation."

"You appear to blame me for common civility to her," he observed. "I cannot, somehow, understand madame of late. She has so changed."

"Yes," she answered with a bitter smile; "I have grown older--and wiser."

"Wisdom always adds charm to a woman," he replied, endeavouring to turn her sarcasm into a compliment.

"And age commands respect," she answered.

He laughed uneasily, for he knew well her quick and clever repartee.

"I have been wishing to have a word with madame for a long time," he said, at last breaking a silence that had fallen between them. "You have pointedly avoided me for several weeks. Have I given you offence?

If so, I beg a thousand pardons."

She did not answer for some time. At heart she despised this Imperial Prince, before whom half the women in London bowed and curtsied. She had once allowed him to pay court to her in his fussy, foreign manner, amused and flattered that one of his degree should find her interesting; but all that was now of the past. In those brief moments as they rode together along the country road in the wintry twilight, recollections of summer days at Fernhurst came back to her, and she hated herself. In those days she had actually forgotten Dudley. And then she also remembered how this man had condemned her lover: how he had urged her to break off the acquaintance, and how he had hinted at some secret which, when exposed, must result in Dudley's ruin.

Those enigmatical words of his had caused her much thought. At what had he hinted? A thousand times had she endeavoured to discover his meaning, but had utterly failed. If such a secret actually existed, and if its revelation could cause the downfall of Dudley Chisholm, then it was surely her duty to discover it and to seek its suppression. This latter thought caused her to hesitate, and to leave unsaid the hasty answer that had flashed into her mind.

"Well," she said at length, "now that you have spoken plainly, I may as well confess that I have been annoyed--very much annoyed."

"I regret that!" he exclaimed with quick concern. "If I have caused madame any annoyance, I a.s.sure her it was not in the least intentional.

But tell me how I have annoyed you."

"Oh, it was a small matter, quite a trivial one," she said with affected carelessness, settling her habit and glancing furtively at the man who had declared that he held her lover's secret.

"But you will tell me," he urged. "Please do. I have already apologised."

"Then that is sufficient," she replied.

"No, it is not sufficient I must know my offence, to be fully cognisant of its gravity."

Her brows contracted slightly, but in the fading light he did not notice the shadow of annoyance that pa.s.sed across her countenance.

"As I have told you, the offence was not a grave one," she declared. "I was merely annoyed, that is all."

"Annoyed by my actions, or by my words?"

"By your words."

"On what occasion?"

"On the last occasion you dined at my house."

For a moment his face a.s.sumed a puzzled expression, then in an instant the truth flashed upon him.

"Ah!" he cried; "I recollect, of course. Madame has been offended at what I said regarding her friend, the Under-Secretary. I can only repeat my apologies."

"You repeat them because what you told me was untrue!" she exclaimed, turning and looking him full in the face. They had allowed their horses to walk, in order to be able to converse.

"I much regret, madame, that it was true," he replied.

"All of it?"

"All of it."

"And there exists somewhere or other a doc.u.ment which inculpates Dudley Chisholm?"

"Yes, it inculpates him very gravely, I am sorry to say."

"Sorry! Why?"

"Well, because he is madame's friend--her very best friend, if report speaks the truth." There was a sarcastic ring in his words which she did not fail to detect, and it stung her to fury.

"I cannot see why you should entertain the least sympathy for my friend," she remarked in a hard voice. "More especially for one unknown to you."

"Oh, we have met!" her companion said. "We met in Paris long since on an occasion when I was travelling incognito, and I liked him. Indeed, he was dining at the Carlton a week ago at the next table to me."

"And you are aware of the nature of this secret, which, according to what you tell me, must some day or other bring about his utter downfall?"

"Ah, no. Madame misunderstands me entirely," he hastened to protest.

"I am not a diplomatist, nor have I any connection, official or otherwise, with diplomacy. I merely told you of a matter which had come to my knowledge. Recollect, that a young man in Chisholm's position of responsibility must have a large number of jealous enemies. Perhaps it will be owing to one of these that the secret will leak out."

"It will be used for a political purpose, you mean?"

"Exactly," replied the Grand-Duke. "Your Government, what with the two or three contending parties, is always at war, as it were, and the Opposition, as you term it, may, as a _coup de grace_ to the Government, reveal the secret."

"But you told me that it was a doc.u.ment, and that it reposed safely in one of the Chancelleries in a foreign capital, if I remember aright,"

she said. "Now, tell me honestly, is St. Petersburg the capital you refer to?"

"No, it is not," he replied promptly.

"And the Emba.s.sy in London that is aware of the truth is not in Chesham Place?"

"Most a.s.suredly not, madame," he replied.