This was another of the empty rooms at No 351, the grand, sprawling house in which I locked myself for an overnight vigil in late July, 2016. I recall I was getting pretty tired by now, subsisting on packets of almonds, and the sudden surges of nervous energy bequeathed me by every unexpected noise, every ruffle of startled pigeon feathers, every creak of the building’s timbers. Still, I was quick-witted enough to go on capturing the various glowing manifestations that followed me about No 351’s chambers – including these three, standing by the hearth as if in conference, their backs to the memory of the fire.