"Oh, I am so glad. Now listen to me carefully."

She went on with some detail to tell the story of her last night's experiences. She spoke of Felix Zary and the letter which she had been more or less compelled to write to him. Also, she described the ruse by which the letter had been regained.

"Now you must go and see this Zary," she said. "Tell him that you come from me, and tell him all about the letter. Mind, he must reply to my letter just as if it had reached him in the ordinary way through the post, because, as you see, I shall have to show the answer to Mr. Fenwick, and I want to lull his suspicions to rest entirely. You may find Zary a little awkward at first."

"I don't think I shall," Venner smiled. "In fact, he and I are already acquainted. But I am not going to tell you anything about that; you prefer to keep your secrets as far as I am concerned, and I am going to guard mine for the present. I am working to put an end to all this mystery and bother, and I am going to do it my own way. Anyway, I will see Zary for you and tell him exactly what has happened. In fact, I will go to town this evening for the express purpose. Then I will come back in the morning and meet you here the same time to-morrow afternoon."

They parted at that, and Vera made her way back to the house. She saw that the letters were no longer on the hall table, and therefore she concluded that they had been posted. She assumed a quiet, dignified manner during the rest of the evening. She treated Fenwick more or less distantly, as if she were still offended with his suspicions. Fenwick, on the other hand, was more than usually amiable. Something had evidently pleased him, and he appeared to be doing his best to wipe out the unpleasant impression of the morning. Vera felt quite easy in her mind now; she knew that her ruse had been absolutely successful. All the same, she ignored Fenwick's request of a little music, professing to be exceedingly tired, which, indeed, was no more than the truth.

"I am going to bed quite early to-night," she said. "I have been sleeping very indifferently of late."

It was barely ten before she was in her room, and there she lay, oblivious of all that was taking place around her, till she woke presently with an idea that she could hear the sound of hammering close by. As she sat up in bed with all her senses about her, she could hear the great stable clock strike the hour of three. Her ears had not deceived her; the sound of metal meeting metal in a kind of musical chink came distinct and clear. Then from somewhere near she could hear voices. The thing was very strange, seeing that Fenwick was a business man pure and simple, and that he had never confessed to any knowledge of mechanics. It came back to her mind now, that directly she had entered the house Fenwick had greeted her in a suit of blue overalls which she understood men who followed mechanical pursuits generally wore. She recollected, too, that his hands were black and grimy. What could be going on, and why had she seen nothing of this during the day-time? She could comprehend men sitting up all night and working in a factory, but surely there could be no occasion for a thing like this in a private house, unless, perhaps, Fenwick and his satellites were engaged in some pursuit that needed careful concealment from the eyes of the law.

It would be well, perhaps, Vera thought, if she could find out what was going on. The discovery might be the means of putting another weapon into her hands. She rose from her bed and partially dressed herself. Then, with a pair of slippers on her feet and a dark wrap round her shoulders, she stole into the corridor. A dim light was burning there, so that she had no fear of being discovered, especially as the walls were draped with tapestry, and here and there armored figures stood, which afforded a capital means of concealment. As Vera sidled along she noticed that at the end of the corridor was a small room down a flight of steps. From where she stood she could see into the room, the door of which was open. Fenwick stood there apparently engaged in superintending the melting of metal in a crucible over a fire, which was driven to white heat by a pair of bellows. The rest of his gang seemed to be doing something on an iron table with moulds and discs. Vera could see the gleam of yellow metal, then somebody closed the door of the room and she could learn no more. It was all very strange and mysterious, and there was a furtive air about it which did not suggest honesty of purpose. There was nothing more for it now except for Vera to return to her room, with a determination to see the inside of that little apartment the first time that the coast was clear.

She hurried along back to her own room, and had almost succeeded in reaching it, when she came face to face with a man who had stepped out of a doorway so suddenly that the two figures came almost in contact. A fraction of a second later a hand was laid over Vera's mouth, while another grasped her wrist; then she saw that the intruder had been joined by a companion.

"Please don't say a word, miss; and, whatever you do, don't call out," one of the men whispered. "We know all about you and who you are. Believe me, we are here to do you the greatest service in our power. My colleague will tell you the same."