If you’ve ever looked into running water at midday and been mesmerised by the play of shadows over stones, and how even the sound of the water running seems, somehow, to have absorbed sunshine scattered through lines of leaves and grasses—if you’ve ever stood on a moor in the west country and watched daylight flash and vanish over the green and granite of the land—you might have a sense of how Rin looked as they listened to Esther, hope and anguish rippling through and around each other on the high pale planes of their face.