He comes up on Thursday night with the bag and stands in the doorway and raises one hand as though to knock on a door that is already open.

RabIf I come in, I am unobserved. Nothing that happens in that room can be filed. I would be giving up the only hour of the week where I could be moving my number.

TamsinMy number is the highest in the school. There is nothing left for me to move it with.

RabThat is not why I am here.

TamsinI know. Come in.