Mr.

Keller saw the listing on the Saturday and recognised the room in the background of one of the photographs — he had been in our house twice, once for a small group thing and once to look at our furnace — and he messaged the account.

And he came over on the Monday afternoon, while I was at work, and he gave my son a thousand dollars in cash, which was a hundred more than the asking price, because he looked at how the instrument had been kept and told Julian he was not going to take advantage of a tidy kid.

And five times, across about forty minutes in my living room, in a conversation that I have now heard described by both participants, Bernard Keller asked a thirteen-year-old boy whether he was sure.