"What a cool one you are!" cried Cora. "If you were not my enemy, I could admire you vastly." "Don't, I beg of you," said the girl, gravely. "I am sufficiently humiliated by being obliged to deal with you as an enemy." Cora flushed angrily. "Then I should think the humiliation of being made love to by my brother, would overcome you," she sneered. "It does, almost," replied the girl, wearily. "Then let me do you another favor. Mr. Davlin is no more my brother than he is yours." Madeline's answer fairly took her breath away. "Madame, you are very good, but I have known that from the first." "What!" gasped the woman; adding, after a moment of silence, "Is he your lover as well as--" "Yours?" finished Madeline. "And what then, Mrs. Arthur?" "Then," hissed Cora; "then, I hate you both." Madeline laughed bitterly. "As you have told me a secret, and as I don't want to remain in your debt, I will tell you one in return. Lucian Davlin _is_ my lover, but I am his bitterest foe!" Cora came closer and looked her eagerly in the face. "What has he done to you?" she asked, breathlessly. "You may find out later; just now we are even. Understand, no word of warning to him, if you value your safety. Obey my wishes, and when I am done with you, you may go free. Attempt any treachery, and I will give you up to justice." "I shan't put myself in jeopardy for him now, whatever I might have done. You may believe that." "I think I may," replied Madeline, dryly. When Cora retired to her own room, to chuckle over the discomfiture in store for the spinster and Mr. Percy, and to wonder wrathfully what the mystery concerning Miss Payne and Lucian could mean, Madeline stood for many minutes lost in thought. Finally she threw herself down upon a couch, uttering a half sigh, and looking utterly weary and perplexed. A moment later, Joliffe entered noiselessly, as usual, and the girl said to her: "When Miss Arthur retires for the night, which won't be for some time, do you see Mr. Percy when he is _alone_, mind, and tell him Miss Payne desires him to wait her pleasure in the library." Joliffe bowed and went out again like a cat. When, at last, the other members of that incongruous family circle were safely out of the way, Madeline, warned by the everpresent, soundless Joliffe, awaited in the library the coming of Mr. Percy. Wondering much what the haughty heiress could have to communicate to him, and dimly hoping that the tide was turning in his favor, Mr. Percy entered the presence of the arbiter of his fate. Bowing like a courtier, he approached her. "Miss Payne has deigned to honor me with an interview," he said, in his slowest, softest, most irresistible manner. "I can never be sufficiently grateful." Madeline motioned him to a seat opposite her own, saying, with an odd smile: "You shall, at least, have an opportunity for repaying your debt of gratitude, sir, and that immediately."