I had already given the door a few tentative knocks, but then I knocked again just to be sure. I had looked for a button to press or a bell to pull, but there was no such thing. There is a little window – a panel of pebbled glass – and through it I see him moving about inside the apartment. It’s just like him to putter about; he’s probably fussing about some detail or other – I’ll have to fix the hinges on that door soon, maybe I should turn the TV off, where on earth is it? I just had it a moment ago.