As that reminiscence and conviction flashed to her mind, she nerved herself to advance into the passage; but all was silent, and not a soul was there save herself. Scarcely knowing what to think, yet ashamed to give way to superstitious fears, Nisida retraced her steps, and proceeded to examine the door of the closet. She was satisfied that it had never been opened since the night of her father's death; for the seals which she had induced Francisco to place upon the lock next day were still there. But all the while she was thus scrutinizing the door, the lock, and the seals, she could not help occasionally casting a furtive glance around, to convince herself that the tall, dark, muffled form was not standing behind her: and, as she retraced her way to her own apartments, she stopped now and then through dread that _other_ footsteps beside her own echoed in the long and lonely corridors of the old mansion. She, however, regained her chamber in safety, and fell into a deep reverie respecting the tall figure she had seen. Were it not for the fact, of which she was confident, of her having closed the door on entering the room where her father had died, she would have concluded that her imagination had deluded her; but she now feared lest she might be watched by spies for some unknown and hostile purpose. It was perplexing, to say the least of it; and Nisida determined to adopt all possible precautions against her secret enemies, whoever they might be. She accordingly arose from her seat--put off her upper garment--donned her thin but strong corselet--and then assumed the black velvet robe which reached up to her throat, concealing the armor beneath. Her flexible dagger--that fatal weapon which had dealt death to the unfortunate Agnes--was next thrust into the sheath formed by the wide border of her stomacher; and Nisida smiled with haughty triumph as if in defiance to her foes. She then repaired to one of the splendid saloons of the mansion; and ere she sat down to the repast that was served up, she dispatched a note acquainting Dr. Duras with her return, and requesting his immediate presence. In about half an hour the physician arrived, and his joy at beholding Nisida again was only equaled by his impatience to learn the cause of her long absence and all that had befallen her during the interval. She made a sign for the old man to follow her to the retirement of her own apartments; and then, having closed the door, she said to him in a low tone, "Doctor, we will converse by means of signs no more; for, though still forced to simulate the deaf and dumb in the presence of the world, yet now--with you, who have all along known my terrible secret--our discourse must be too important to be carried on by mere signs."