"It isn't Pollyooly I'm doubtful about. You need have no fears about her. She's by far the cleverest child I know, and she'll play her part all right. But, unfortunately, when you kidnapped her in Piccadilly and took her to Ricksborough House, your butler and Marion's nurse—what's her name?—Mrs. Hutton, learnt that Marion has a double, and they may suspect things."

"Oh, no: Lucas doesn't go to the court; and I discharged Mrs. Hutton for being an idiot. Also, I dismissed Miss Marlow, Marion's governess. I had no use for her. Really there's no one at the court now who came into close contact with Marion at all," said the duke.

"That does simplify things," said the Honourable John Ruffin cheerfully. "But of course it's going to be a matter of weeks. Caroline won't hear about it at once probably, for her friends won't hear about it to let her know. Then it'll take her some time to get over her satisfaction at having got her way, and to realise that Marion is out in the cold."

"Then she'll come back like a knife," said the duke.

"Yes; but Pollyooly has got to keep the game going for a good six weeks. Let's hear what she thinks about taking it on," said the Honourable John Ruffin, and he rang the bell.

"Of course she'll take it on. Besides having her at the court, I shall pay her a trifle," said the duke in a tone of complete assurance.

"You won't. You'll pay her at least five pounds a week," said the Honourable John Ruffin in an equally assured tone. "But even so, she may refuse to leave her little brother for so long."

CHAPTER XVIII

THE DUKE'S IDEA TAKES FORM