Christoffer came back today.
I saw him in the cracks between the door and the wall.
He had come for the first time sometime around May. I noticed him on the wall behind my desk. It was only for a moment when I saw him, I blinked and when I looked again he was gone. He must have entered through the window blinds, it had started to get hot these days and I kept the glass open most of the time.
That night I said it was just my imagination and went to bed, ignoring the little cracking sounds I kept hearing before sleep took me. Must be the dogs in the yard turning around in their cage, I thought.