"She could plead that she was blackmailed into it. If someone suggested that course to her."

Mrs. Sharpe eyed him. "Isn't there anything in English law about tampering with a witness?" she asked.

"Plenty. But I don't propose to do any tampering."

"What do you propose to do?"

"I must think it over. It is a delicate situation."

"Mr. Blair, the intricacies of the Law have always been beyond me, and are always likely to be, but you won't get yourself put away for contempt of court, or something like that, will you? I can't imagine what the present situation would be like without your support."

Robert said that he had no intention of getting himself put away for anything. That he was a blameless solicitor of unblemished reputation and high moral principles and that she need have no fear either for herself or for him.

"If we could knock the prop of Gladys Rees from under Rose's story it would undermine their whole case," he said. "It's their most valuable piece of evidence: that Rose had mentioned the screaming before there was any suggestion of a charge against you. I suppose you couldn't see Grant's face when Rose was giving evidence? A fastidious mind must be a great handicap in the C.I.D. It must be sad to have your whole case depend on someone you would hate to touch with a barge-pole. Now I must be getting back. May I take the little cardboard box and the scrap of paper with the printing?"

"It was clever of you to have seen that Rose would not have sent it back," Marion said, putting the scrap of paper into the box and giving it to him. "You should have been a detective."

"Either that or a fortune-teller. Everything deduced from the egg-stain on the waistcoat. Au revoir. "