“Where is this meeting to take place?” demanded Selwood.

“It can take place at my flat: in fact, it must, because, as I say, I am unfortunately mixed up,” said Mrs. Engledew. “If you agree to the terms, you are to telephone to me—I have written my number on the card—at two o’clock this afternoon. Then I shall telephone the time of meeting tonight, and you must bring the money with you.”

“Ten thousand pounds in cash—on Sunday!” exclaimed Selwood. “That, of course, is utterly impossible.”

“Not cash in that sense,” replied Mrs. Engledew. “An open cheque will do. And, don’t you see, that, I think, proves the bona fides of the men. If they fail to do what they say they can and will do, you can stop payment of that cheque first thing tomorrow morning.”

“Yes, that’s so,” agreed Selwood. He glanced at Peggie, who was silently listening with deep interest. “I don’t know how things stand,” he went on. “Mr. Halfpenny, Miss Wynne’s solicitor, lives a long way out of town. Miss Wynne would doubtless cheerfully sacrifice ten thousand pounds to save her cousin——”

“Oh, twenty thousand—anything!” exclaimed Peggie. “Don’t let us hesitate about money, please.”

“But I don’t know whether she can draw a cheque,” continued Selwood. “At least, for such an amount as that. Perhaps Professor Cox-Raythwaite can tell us. Let me ask you a question or two, if you please, Mrs. Engledew,” he went on. “You say you only know one of these men. Do you know his name?”

“No—I don’t,” confessed Mrs. Engledew. “Everything is secret and mysterious.”

“Are you convinced—has he done anything to convince you—of his good faith?”