And now lord Herbert, depending more upon his wits than his learning, found himself a good deal in the dark. Confident that neither Richard, Tom Fool, nor mistress Watson had locked the door of the turret chamber after Dorothy's entrance, he gave one moment to the examination of the lock, and was satisfied that an enemy had done it. He then started his thoughts on another track, tending towards the same point: how was it that the roundhead, who had been carried insensible to the turret-chamber, had been able, ere yet more than a film of grey thinned the darkness, without alarming a single sleeper, to find his way from a part of the house where there were no stairs near, and many rooms, all occupied? Clearly by the help of her, whoever she was, whom Tom Fool had seen with him by the hall door. She had guided him down my lord's stair, and thus avoided the risk of crossing the paved court to the hall door within sight of the warders of the main entrance. To her indubitably the young roundhead had committed the ring for Dorothy. Here then was one secret agent in the affair: was it likely there had been two? If not, this woman was one and the same with the person who turned the key upon Dorothy. She probably had been approaching the snare while the traitress talked with the prisoner. What did her presence so soon again in the vicinity of the turret-chamber indicate? Possibly that her own chamber was near it. The next step then was to learn from the housekeeper who slept in the neighbourhood of the turret-chamber, and then to narrow the ground of search by inquiring which, if any of them, slept alone. He found there were two who occupied each a chamber by herself; one of them was Amanda, the other mistress Watson. Now therefore he knew distinctly in what direction first he must point his tentatives. Before he went farther, however, he drew from Dorothy an accurate description of the ring to which Richard's letter alluded, and immediately set about making one after it, from stage to stage of its progress bringing it to her for examination and criticism, until, before the day was over, he had completed a model sufficiently like to pass for the same.