"Pray be seated, Mr. Steel," the silvery voice said. "Believe me, had there been any other way, I would not have given you all this trouble. You found the parcel addressed to you? It is an earnest of good faith. Is not that a correct English expression?"

David murmured that it was. But what did the speaker mean? She asked the question like a student of the English language, yet her accent and phrasing were perfect. She laughed again noiselessly, and once more Steel caught the subtle, entrancing perfume.

"I make no further apology for dragging you here at this time," the sweet voice said. "We knew that you were in the habit of sitting up alone late at night, hence the telephone message. You will perhaps wonder how we came to know so much of your private affairs. Rest assured that we learnt nothing in Brighton. Presently you may gather why I am so deeply interested in you; I have been for the past fortnight. You see, we were not quite certain that you would come to our assistance unless we could find some means of coercing you. Then we go to one of the smartest inquiry agents in the world and say: 'Tell us all about Mr. David Steel without delay. Money is no object.' In less than a week we know all about Beckstein. We leave matters till the last moment. If you only knew how revolting it all was!"

"So your tone seems to imply, madam," Steel said, drily.

"Oh, but truly. You were in great trouble, and we found a way to get you out. At a price; ah, yes. But your trouble is nothing compared with mine—which brings me to business. A fortnight ago last Monday you posted to Mr. Vanstone, editor of the Piccadilly Magazine, the synopsis of the first four or five chapters of a proposed serial for the journal in question. You open that story with a young and beautiful woman who is in deadly peril. Is not that so?"

"Yes," Steel said, faintly. "It is just as you suggest. But how—"

"Never mind that, because I am not going to tell you. In common parlance—is not that the word?—that woman is in a frightful fix. There is nothing strained about your heroine's situation, because I have heard of people being in a similar plight before. Mr. Steel, I want you to tell me truthfully and candidly, can you see the way clear to save your heroine? Oh, I don't mean by the long arm of coincidence or other favourite ruses known to your craft. I mean by common sense, logical methods, by brilliant ruses, by Machiavelian means. Tell me, do you see a way?"

The question came eagerly, almost imploringly, from the darkness. David could hear the quick gasps of his questioner, could catch the rustle of the silken corsage as she breathed.

"Yes," he said, "I can see a brilliant way out that would satisfy the strictest logician. But you—"

"Thank Heaven! Mr. Steel, I am your heroine. I am placed in exactly the same position as the woman whose story you are going to write. The setting is different, the local colouring is not the same, but the same deadly peril menaces me. For the love of Heaven hold out your hand to save a lonely and desperate woman whose only crime is that she is rich and beautiful. Providence had placed in my hands the gist of your heroine's story. Hence this masquerade; hence the fact that you are here to-night. I have helped you—help me in return."