Then he heard footsteps. Heavy. Someone wearing boots on the rocky path. Perez moved into the corner formed by two walls so that his silhouette wouldn’t show up against the lightening sky. There were still occasional flagstones on the floor, with cotton grass growing between them. He crouched in the corner and waited, feeling slightly ridiculous, reverting to childhood and hide-and-seek with his cousins. Around him suddenly there was movement. It was as if the wall was alive and shifting. There was a murmuring, the softness of wings against the air. Storm-petrels, bat-like and gentle-eyed, which had nested in cracks in the wall, were flying out towards the sea.

The footsteps got closer and now Perez saw torchlight. Very faint, as if the battery was low. No other sound. No one was shouting out for Polly. If this was a searcher, then perhaps they’d lost heart. Perhaps. Still there wasn’t enough light to make a positive identification.

Standing in the shadow, Perez was thinking about all the people he’d met since he’d come to Unst the week before, and in his head he saw them moving around as if they were actors on a giant stage. But now he’d lost control of their moves. He knew they were scattered around Meoness, on the cliffs and the shore, but didn’t have precise positions for them and that made him nervous. He was a director whose players were taking no notice of him. He’d lost control of the action.

The figure moved on down the path towards the settlement of Meoness and paused briefly to look over the loch, where Eleanor had been lying in her smart silk dress, pointing the torch around the grassy banks as if looking for something specific. It was impossible to tell if the walker was male or female, but they were fit and moved easily down the steep path. Perez waited for a while, indecisive. He still thought Polly might come this way. The fog had cleared above him and, in the last of the darkness, the sky was suddenly filled with stars. He saw the Milky Way as defined points of light and all the space made him feel giddy, made him forget for a moment what he was doing there. Then he came to his senses and followed the figure further down the path.