I stare for a moment, then wiggle my fingers. The fingers of the hand holding the soap move also. I gasp, and the soap thuds into the sink. I look up at the mirror.

The face I see looking back at me is not my own. The hair has no volume and is cut much shorter than I wear it, the skin on the cheeks and under the chin sags, the lips are thin, the mouth turned down. I cry out, a wordless gasp that would turn into a shriek of shock were I to let it, and then notice the eyes. The skin around them is lined, yes, but despite everything else I can see that they are mine. The person in the mirror is me, but I am twenty years too old. Twenty-five. More.

This isn’t possible. Beginning to shake, I grip the edge of the sink. Another scream starts to rise in my chest and this one erupts as a strangled gasp. I step back, away from the mirror, and it is then that I see them. Photographs. Taped to the wall, to the mirror itself. Pictures, interspersed with yellow pieces of gummed paper, felt-tip notes, damp and curling.

I choose one at random. Christine, it says, and an arrow points to a photograph of me — this new me, this old me — in which I am sitting on a bench on a quayside, next to a man. The name seems familiar, but only distantly so, as if I am having to make an effort to believe that it is mine. In the photograph we are both smiling at the camera, holding hands. He is handsome, attractive, and when I look closely I can see that it is the same man I slept with, the one I left in the bed. The word Ben is written beneath it, and next to it Your husband.