"It's her half-day," said Mrs. Bowers. "Nor she don't turn up till nine in the mornings, and mostly late. I'll nip up and make Miss Margaret's and Mr. Peter's beds before she gets here, and she don't ever go into any of the sitting-rooms."
"Better not have her at all to-morrow," Charles said. "Can you get rid of her without her smelling a rat, Emma?"
She thought for a moment. "Yes, sir. If Miss Margaret and Mr. Peter aren't supposed to be here there'll only be the two bedrooms to do. I'll say she can have the whole day, since we're all at sixes and sevens. You leave it to me."
Mrs. Bosanquet had been scrutinising Michael through her lorgnette. She now turned to Charles, and said in the perfectly audible voice deaf people imagine to be a whisper: "My dear, you may say what you please about that young man being a detective, but it appears to me that he is the same malicious person who pointed at me in the dark."
Michael laughed. "I've never pointed at you, Mrs. Bosanquet. I'll explain it all to you later. Come on, Fripp: we'll go back the way we came. You'll turn up again later in the morning, inspector. You understand what I want you to do?"
"Yes. Send a man over to make a lot of inquiries, and make it seem we're on the wrong track. Well, Flinders will do a bit of searching all the morning, I don't doubt, and so long as he doesn't know the truth he'll put every one off the scent. I'll get back to the station now, and be with you again about ten."
Margaret said worriedly: "Must you go back that way? I suppose it's safe, but I don't like to think of you down there."
Charles opened his eyes at that, but Margaret did not notice his surprise.
"I shall be all right," Michael said. "You go and get some sleep. So long!" He went through on to the stair, Fripp followed him, and as Michael set his foot on the second step the panel slid into place again.
Charles went to see the inspector off the premises. When he came back Margaret was telling her story to her sister and aunt. Charles listened to it in silence, but when she had finished he drew a long breath. "Talk about halfwits!" he said. "Why did you want to go and step into the cavity?"