“This is a pure matter of business, of course,” said Wimsey, rather rapidly, “and you will let me have a note of the expenses in your usual business-like way.”

“Of course.” Miss Climpson was dignified. “And I will give you a proper receipt immediately.

“Dear, dear,” she added, hunting through her purse, “I do not appear to have any penny stamps. How extremely remiss of me. It is most unusual for me not to have my little book of stamps—so handy I always think they are—but only last night Mrs. Williams borrowed my last stamps to send a very urgent letter to her son in Japan. If you will excuse me a moment—”

“I think I have some,” interposed Parker.

“Oh, thank you very much, Mr. Parker. Here is the twopence. I never allow myself to be without pennies—on account of the bathroom geyser, you know. Such a very sensible invention, most convenient, and prevents all dispute about hot water among the tenants. Thank you so much. And now I sign my name across the stamps. That’s right, isn’t it? My dear father would be surprised to find his daughter so business-like. He always said a woman should never need to know anything about money matters, but times have changed so greatly, have they not?”

Miss Climpson ushered them down all six flights of stairs, volubly protesting at their protests, and the door closed behind them.

“May I ask—?” began Parker.

“It is not what you think,” said his lordship, earnestly.

“Of course not,” agreed Parker.

“There, I knew you had a nasty mind. Even the closest of one’s friends turn out to be secret thinkers. They think in private thoughts which they publicly repudiate.”