"You have said that a dozen times in the last twenty-four hours," Quarles returned rather shortly, adding after a moment's pause, as if he were giving us valuable information, "and to-day is Friday."

"It is simply impossible that the servant should know so little," she persisted. "His ignorance is too colossal to be genuine. He doesn't know whether he was attacked by one person or by half-a-dozen; he is not sure that it wasn't a woman who seized him; he has no idea what his master kept in the safe or in the cupboard. Well, all I can say is, I do not believe him."

I was inclined to agree with her, but in silence I went on looking through the notes I had made concerning the extraordinary case which must be solved quickly if the solution were to be of any benefit to the country. Quarles was also silent, continuing his work as an amateur cubist.

He had expressed no definite opinion since the case had come into his hands, nor had he laughed at any speculation of mine, a sure sign that he was barren of ideas. I had never known him so reticent.

It was his case entirely, not mine, and the fact that the government had considered he was the only man likely to get to the bottom of the mystery was a recognition of his powers, which pleased him no doubt. Twenty-four hours had elapsed since he had been put in possession of the facts, and although they had been spent in tireless energy by both of us—for he had immediately sent for me—we seemed as far from the truth as ever.

On the previous Tuesday Lady Chilcot had given a dance in her house in Mayfair. Her entertainments always had a political flavor, and on this particular evening her rooms seemed to have been full of conflicting influences.

There was considerable political tension at the time, consequent upon one of those periodical disturbances in the Balkans, and people remarked upon the coolness between the Minister for War and certain ambassadors who were all present at Lady Chilcot's.

Imagination may have had something to do with this conclusion, but two apparently trivial incidents assumed importance as regards the case in hand. The Silesian ambassador was seen in very earnest conversation with a young man attached to the Silesian Embassy; and the Minister of War had buttonholed young Lanning.

Of course, we did not know what the Silesians had talked about, but to Lanning the minister had remarked that, in view of the political situation, the experiments which had been witnessed that day might prove to be of supreme importance. Lanning expressed gratification that the experiments had been found convincing, and ventured to hope the government would not delay getting to work.

With the minister's assurance that the government was keen, Richard Lanning went to find Barbara Chilcot, Lady Chilcot's daughter, but not to talk about the Minister of War or about any experiments. He was in love with her, and had every reason to believe that she liked him.