A group of us are swimming a long distance race down the Thames. I am near the front. A rope to our right guides us forwards. After a few hours it leads us out of the river into a house, through holes in walls to a bedroom where Hazel and I take a rest. When I start up again I can just make out an old metal fire escape under the surface of the water. I am expected to leap down onto it but instead I lower myself gingerly. The great swim continues.