It was fairly safe, at least, to suppose that the dead man and the man whom Grant had mentally christened the Levantine had known each other sufficiently well to knock sparks from each other. Grant had very little belief in secret societies as the origins of picturesque murders. Secret societies delighted in robbery and blackmail and all the more squalid methods of getting something for nothing, and there was seldom anything picturesque about them, as he knew from bitter experience. Moreover, there were no impressive secret societies in London at present, and he hoped they would not start. Murder to order bored him stiff. What interested him was the possible play of mind on mind, of emotion on emotion. Like the Levantine and the unknown. Well, he must do his best to find out who the Unknown was — that would give him a line on the Levantine. Why had no one claimed him? It was early yet, of course. He might be recognized by some one at any minute. After all, he had only been «missing» to his people for the space of a night, and not many people rush to see a murdered man because their son or brother has stayed out for the night.

With patience and consideration and an alert mind, Grant interviewed the seven people he had set out to see quite literally to see. He had not anticipated receiving information from them directly, but he wanted to see them for himself and to sum them up. He found them all going about their various business with the exception of Mrs. James Ratcliffe, who was prostrate in bed and being attended by the doctor, who deplored the nervous shock she had received. Her sister — a charming girl with hair the colour of honey — talked to Grant. She had come into the drawing-room quite obviously hostile to the thought of any police officer being admitted to her sister in her present state. The sight of the police officer in reality was so astonishing that she looked again at his card quite involuntarily, and Grant smiled inwardly a little more broadly than he permitted himself outwardly.