During these preparations Obed stood waiting near the carriage, while Gualtier sat there with his hands bound. Gladly would he have availed himself of any other chance, however desperate, but there was none. His hands were bound, his enemy was watchful and armed. Under such circumstances there remained no hope. His last attempt had been made boldly and vigorously, but it had failed. So he gave himself up to despair.

The brougham was soon ready. Obed put Gualtier inside and got in himself after him. Then they drove away. Lord Chetwynde was expected that afternoon, and he might meet him on the road. He had made up his mind, however, not to recognize him, but to let him learn the great event from Zillah herself. After giving information to his sister as to the time at which he expected to be back he drove off; and soon the brougham with its occupants was moving swiftly onward out of the villa park, down the descending road, and on toward Florence.

Obed rode inside along with Gualtier all the way. During that drive his mind found full occupation for itself. The discovery and the capture of this man made a startling revelation of several most important yet utterly incomprehensible facts.

First, he recognized in his prisoner the man who had once visited him in New York for the purpose of gaining information about Lady Chetwynde. That information he had refused to give for certain reasons of his own, and had very unceremoniously dismissed the man that had sought it.

Secondly, this was the same man who in disguise had penetrated into his villa with all the air and manner of a spy, and who, by thus following him, showed that he must have been on his track for a long time.

Thirdly, this very man had turned out to be the long-sought Gualtier --the one who had betrayed Miss Lorton to a death from which she had only been saved by a mere accident. This was the man who had won the affections of Miss Lorton's friend, Hilda, who had induced her to share his villainy and his crime; the man who had for so long a time baffled the utmost efforts of the chief European police, yet who had at last been captured by himself.

Now about this man there were circumstances which to Obed were utterly incomprehensible.

It was conceivable that the man who had sought him in New York should track him to Florence. He might have an interest in this affair of Lady Chetwynde deep enough to inspire so pertinacious a search, so that the difficulty did not consist in this. The true difficulty lay in the fact that this man who had come to him first as the inquirer after Lady Chetwynde should now turn out to be the betrayer of Miss Lorton. And this made his present purpose the more unintelligible. What was it that had brought him across Obed's path? Was he still seeking after information about Lady Chetwynde? or, rather, was he seeking to renew his former attempt against Miss Lorton? To this latter supposition Obed felt himself drawn. It seemed to him most probable that Gualtier had somehow found out about the rescue of Zillah, and was now tracking her with the intention of consummating his work. This only could account for his twofold disguise, and his persistence in coming toward the villa after the punishment and the warning which he had once received. To think that he should run such a risk in order to prosecute his inquiry after Lady Chetwynde was absurd; but to suppose that he did it from certain designs on Miss Lorton seemed the most natural thing in the world for a villain in his position.

But behind all this there was something more; and this became to Obed the most difficult problem. It was easy to conjecture the present motive of this Gualtier--the motive which had drawn him out to the villa, to track them, to spy them, and to hover about the place; but there was another thing to which it was not so easy to give an answer. It was the startling fact of the identity between the man who had once come to him in order to investigate about Lady Chetwynde and the one who had betrayed Miss Lorton. How did it happen that the same man should have taken part in each? What should have led him to America for the purpose of questioning him about that long-forgotten tragedy, and afterward have made him the assassin which he was? It seemed as though this Gualtier was associated with the two chief tragedies of Obed's life, for this of Miss Lorton was certainly not inferior in its effect upon his feelings to that old one of Lady Chetwynde. Yet how was it that he had become thus associated with two such events as these? By what strange fatality had he and Obed thus found a common ground of interest in one another--a ground where the one was the assailant and betrayer, the other the savior and defender?

Such thoughts as these perplexed Obed, and he could not find an answer to them. An answer might certainly have been given by the man himself at his side, but Obed did not deign to question him; for, somehow, he felt that at the bottom of all this lay that strange secret which Miss Lorton had so studiously preserved. Part of it she had revealed, but only part, and that, too, in such general outlines that any discovery of the rest was impossible. Had Obed questioned Gualtier he might have discovered the truth; that is, if Gualtier would have answered his questions, which, of course, he would not have done. But Obed did not even try him. He asked nothing and said nothing during all that long drive. He saw that there was a secret, and he thought that if Miss Lorton chose to keep it he would not seek to find it out. He would rather leave it to her to reveal; and if she did not choose to reveal it, then he would not care to know it. She was the only one who could explain this away, and he thought that it would be, in some sort, an act of disloyalty to make any investigations on his own account with reference to her private affairs. Perhaps in this he might have been wrong; perhaps he might have strained too much his scruples, and yielded to a sense of honor which was too high wrought; yet, at the same time, such was his feeling, and he could not help it; and, after all, it was a noble feeling, which took its rise out of one of the purest and most chivalrous feelings of the heart.