“Yes, she was, and perfectly normal. She didn’t hear Gabriel, of course, because she’s deaf, but Violet did. Violet is my sister-in-law. Lady Wutherwood, you know.”

“Yes. What did they do?”

“Violet said she’d better not keep Gabriel waiting. She said she would like to go into the bathroom, so I told her about the one at the end of the passage.”

Lady Charles, who was sitting next to Alleyn, leant over and looked at his note-book. “Is that your plan?” she said. “Let me see.”

“Immy, my dear!” protested her husband.

“Well, Charlie, I’m not going to read any of Mr. Alleyn’s notes and he’d snatch it away from me if there was anything secret in the drawing. There, it’s as clear as daylight. That’s the bathroom, Mr. Alleyn. I told her where it was and off she went. And then Aunt Kit began to whisper — you know how that generation does — only even more so because, as Patch says, she whispers anyway. So she went off to the other place which I see you’ve also got marked very neatly, and now I think of it that’s the last I saw her.”

“It’s as clear as glass,” Frid interrupted. “She probably whispered: ‘I’ll have to go. Bless you, my dear,’ and you thought she said: ‘Lavatory. I’ll just disappear.’ ”

“Anyone would think it was I who was deaf instead of Aunt Kit! She didn’t say anything of the sort. She went down the passage in that direction.”

“Well, perhaps she’s locked in,” suggested Frid. “It happened to her once before, Mr. Alleyn, in a railway station, and nobody heard her whispering.”

“Good heavens, I wonder—”