I could see he didn’t like this at all. “Suppose we leave that for the moment?” I went on. “Let’s concentrate on Maureen Crosby. From the look of the house and from what Nurse Gurney tells me it is possible Maureen isn’t living at Crestways. If she isn’t there—where is she?”

“Yes,” he said. “There’s that.”

“Is she in Salzer’s sanatorium? Has it occurred to you she may be a prisoner there?”

That brought him bolt upright in his chair. “Aren’t you letting your imagination run away with you? I had a letter from her only last week.”

“That doesn’t mean much. Why did she write?”

“I asked her to sign some papers. She returned them signed, with a covering note thanking me for sending them.”

“From Crestways?”

“The address on the note-paper was Crestways.”

“That still doesn’t prove she isn’t a prisoner, does it? I’m not saying she is, but that’s another thing we shall have to keep in mind.”

“We can find out about that right away,” he said briskly.