“Bertie.”

“Hullo?”

“Shall I tell you something?”

“Certainly, old bird,” I said cordially. “I was just beginning to feel that the scene could do with a bit more dialogue.”

“This business of Angela and me.”

“Yes?”

“I’ve been putting in a lot of solid thinking about it.”

“Oh, yes?”

“I have analysed the situation pitilessly, and one thing stands out as clear as dammit. There has been dirty work afoot.”

“I don’t get you.”