Ladies in the painful position of Mrs. Pavely generally bring a sister, or a close female friend, with them to Scotland Yard.

Sir Angus was keenly interested in this business of the country banker's disappearance, more interested than he had been in any other matter of the kind for a long time. He had all the threads of the affair very clearly set out in his shrewd, powerful mind, and only that morning he had learnt something which he believed none of the three people now standing before him—Mrs. Pavely, Mrs. Winslow, and Lord St. Amant—knew, or were likely ever to know, except, of course, if certain eventualities made the fact important.

Sir Angus had just learnt that Godfrey Pavely had spent some hours of a day he had passed at York in the company of a woman, and both he and the very able man he had put in charge of the case, had made up their minds that here, at last, was the real clue to the banker's disappearance. Godfrey Pavely, so they argued at "The Yard," was certainly alive, and either on the Continent, or hidden snugly in some English or Scottish country town—not alone.

As so often happens, the fact that Mr. Pavely had been in York with a lady had come to light in a very simple way. When the fact of the well-known country banker's disappearance had been announced in the Press, the manager of the Yorkshire branch of a London bank had written to Scotland Yard, and stated that on a certain afternoon about a fortnight ago—he could not remember the exact day, unfortunately—he had seen Mr. Godfrey Pavely, of Pewsbury, in the company of a lady whom he, the bank manager, had naturally supposed to be Mrs. Pavely. He had looked at the banker with a good deal of interest, owing to the fact that he and Mr. Pavely had for a while worked in the same bank in Paris about fifteen years ago.

He had not met the couple face to face, he had seen them pass by from the window of his private room at the bank. He could swear to Mr. Pavely, but he had not paid any special attention to the lady—for one thing, she had had her veil down, and he, feeling sure that she was Mrs. Pavely, had not troubled to observe her very particularly.

Sir Angus had sent some one down to York to see this gentleman, but nothing of further value had been elicited, excepting, yes, that the lady had struck him as being young and attractive.

So it was that the extraordinary typewritten letter received by Mrs. Pavely that morning very much upset the calculations and the theories of Sir Angus and of his staff.

With frowning brow he sat down at his table and touched the electric bell which lay concealed close to his hand.

"Ask Mr. Dowden to come to me," and a minute later Mr. Dowden came in.

"I want to know anything you can tell me about Duke House, if indeed there is such a place as Duke House in Piccadilly. I can't remember the name."