"Yes," she cried, wildly, "I know; you need not say it. It will harden me; it has already. It will make me bitter and bad, unfit for your society, unworthy of your friendship. I shall be a liar, a spy, a hypocrite--but I shall succeed. You see, you were wrong in offering me your friendship, Doctor Vaughan. I shall not be worthy to be called your sister, but," brokenly, "you need not have feared. I never intended to presume upon your friendship; I never intended to trouble you after--after my work is done. Ah! how dared I think to become one of you--I, whom you rescued from a gambler's den; I who go about disguised, and play the servant to people whom you would not touch. You are right; after this I will go my way alone." Her voice became inarticulate, the last word was a sob, and she turned swiftly to leave the room. Olive sprang forward with a remorseful cry, but Clarence Vaughan motioned her back, and with a quick stride was at the door, one hand upon it, the other firmly clasping the wrist of the now sobbing girl. Closing the door, which she had partially opened, he led her back, very gently, but firmly, and placing her in a chair, stood beside her until the sobs ceased. Then he drew a chair close to her own, and said, softly: "My little sister, we never meant this. These are your own morbid fancies. Because you are playing the part of amateur detective, you are not necessarily cut off from all your friends. We would not give you up so easily, and there is too much that is good and noble in you to render your position so very dangerous to your womanhood. You have grieved Mrs. Girard deeply by imputing any such meaning to her words. Can't you understand, child, that it is because we care for you, because we want to shield you from the hardships you must of necessity undergo, that we wish you to let us work with and for you?" Madeline shivered and gave a long, sobbing sigh. He took both listless hands in his own. "Now, sister mine, won't you make me a promise, just one?" Her hands trembled under his. How could she resist him when his strong, firm clasp was upon her; when he was looking into her eyes pleadingly, even tenderly; when his breath was on her cheek, and his voice murmured in her ear? She sat before him, contrite, conquered, strangely happy; conscious of nothing save a wish that she might die then and there, with her hands in his. She was afraid to speak and break the spell. He had said that he cared for her, was not that enough? "Tell me, Madeline." "Yes," she breathed, rather than uttered. [Illustration: "Yes," she cried, wildly, "I know; you need not say it"--page 219.]