That night, Frank, in the solitude of his chamber, shed many bitter tears. He mourned over the fallen condition of that beautiful woman, whom, had she been worthy, he would have cherished as his wife, but who had proved herself not only undeserving of his affection, but depraved and wicked to an astonishing degree. Until the fatal moment when he was led to suspect her chastity, he had loved her devotedly and sincerely. How cruelly had he been deceived! And that night, in the solitude and darkness of his cold and gloomy dungeon, Nero, the African, swore a terrible oath of vengeance upon the white man who had shut him up in that subterranean cell. Within a week after the capture of the Dead Man and David the butler, those two villains were inmates of the State Prison at Sing Sing--the former to fulfil his original sentence of imprisonment for life, and the latter to undergo an imprisonment for five years, for his participation in the attempted robbery of Mr. Sydney. Fred Archer, on escaping from the officer in the manner which we have described, made his way to the Dark Vaults, where he remained concealed for several days, not venturing to appear abroad. At the end of a week he began to grow impatient of the restraint, and, conceiving that no great danger would be incurred if he left his place of refuge in the darkness of night, he resolved to do so; moreover, he was destitute of money, and entertained some hope of being able to extort a sum from his unfortunate wife, whom he had driven to prostitution. Accordingly, at about eight o'clock in the evening, he left the Vaults by means of the secret outlet before alluded to and gaining the street, proceeded at a rapid pace towards the Bowery. In the breast of his coat he carried a huge Bowie knife, with which to defend himself in case any attempt should be made to arrest him. That very day, Frank Sydney, mindful of his promise, had succeeded in obtaining a situation for Mrs. Archer, in the family of an old lady, an aunt of his, who required the attendance of a young woman as a companion and nurse, she being an invalid. In the afternoon, Mrs. Archer received a visit from the boy, Clinton, who came to announce to her the joyful intelligence of a good home having been secured for her; he then placed the following brief note from Frank in her hands:-- 'Mrs. Archer,--Madame: I shall this evening call upon you, to confirm the words of my messenger. The unfortunate career which you have followed, is now nearly ended. Extortion and oppression shall triumph no longer. F.S.'