Ten minutes had not passed when I returned with half-a-dozen officers, and found Madame Jaubert still at her post. We followed her up the court, caught Martin sure enough asleep upon a wretched pallet of straw in one of the alley hovels, and walked him off, terribly scared and surprised, to the nearest station-house, where he passed the remainder of the night. The next day Martin proved an _alibi_ of the distinctest, most undeniable kind. He had been an inmate of Clerkenwell prison for the last three months, with the exception of just six days previous to our capture of him; and he was, of course, at once discharged. The reward was payable only upon conviction of the offender, and the disappointment of poor Madame Jaubert was extreme. She wept bitterly at the thought of being compelled to continue her present disreputable mode of life, when a thousand francs--a sum she believed Martin's capture would have assured her--besides sufficient for her traveling expenses and decent outfit, would, she said, purchase a partnership in a small but respectable millinery shop in Paris. "Well," I remarked to her, "there is no reason for despair. You have not only proved your sincerity and good faith, but that you possess a knowledge--how acquired you best know--of the haunts and hiding-places of burglars. The reward, as you may have seen by the new placards, has been doubled; and I have a strong opinion, from something that has reached me this morning, that if you could light upon one Armstrong, _alias_ Rowden, it would be as certainly yours as if already in your pocket." "Armstrong--Rowden!" repeated the woman, with anxious simplicity; "I never heard either of these names. What sort of a person is he?" I described him minutely; but Madame Jaubert appeared to entertain little or no hope of discovering his whereabout; and, ultimately, went away in a very disconsolate mood, after, however, arranging to meet me the next evening. I met her as agreed. She could obtain, she said, no intelligence of any reliable worth; and she pressed me for further particulars. Was Armstrong a drinking, a gaming, or a play-going man? I told her all I knew of his habits, and a gleam of hope glanced across her face as one or two indications were mentioned. I was to see her again on the morrow. It came; she was as far off as ever; and I advised her to waste no further time in the pursuit, but to at once endeavor to regain a position of respectability by the exercise of industry in the trade or business in which she was reputedly well skilled. Madame Jaubert laughed scornfully; and a gleam, it seemed to me, of her never entirely subdued insanity shot out from her deep-set, flashing eyes. It was finally settled, that I should meet her once more, at the same place, at about eight o'clock the next evening.