"Not at the time. He showed it to me afterwards."
"Any address?"
"No. A half-sheet of rather dirty paper."
"Where is it now?"
"I don't know. In Mark's pocket, I expect."
"Ah!" He pulled at his beard. "Well, we'll come to that. Can you remember what it said?"
"As far as I remember, something like this: 'Mark, your loving brother is coming to see you to-morrow, all the way from Australia. I give you warning so that you will be able to conceal your surprise, but not I hope, your pleasure. Expect him at three, or thereabouts.'"
"Ah!" The inspector copied it down carefully. "Did you notice the postmark?"
"London."
"And what was Mark's attitude?"
"Annoyance, disgust—" Cayley hesitated.
"Apprehension?"
"N-no, not exactly. Or, rather, apprehension of an unpleasant interview, not of any unpleasant outcome for himself."
"You mean that he wasn't afraid of violence, or blackmail, or anything of that sort?"
"He didn't appear to be."
"Right.... Now then, he arrived, you say, about three o'clock?"
"Yes, about that."
"Who was in the house then?"
