The headlights appeared first, sweeping like searchlights over the flat coastal plain behind the dunes, across the reclaimed subsidence ponds where once there had been pits. Vera crouched, because her silhouette might be seen on the horizon against the full moon. The car parked below her. She heard the doors open and shut. Both doors, so there were two people, just as Holly had said. But even in the moonlight it was impossible to make out individual forms. They were just dark shapes. And it was impossible to tell if they were both there voluntarily or if one was the prisoner of the other. There was no other activity on the narrow road leading to the coast. She’d given orders that the officers following should wait on the main road and make their way in carefully on foot. She didn’t want to frighten these people. No more killing. And she hoped it would all be over before they arrived.

She couldn’t see the figures now. They’d started to climb the dunes to the beach and all the shadows had blurred. She strained to listen. Out in the bay she saw the light buoy marking Coquet Island, and again her mind went back to Hector and his raids to collect terns’ eggs. He’d trained her well. What better training could there be for this kind of work?

Then she heard the sand shifting and slipping so close to her that she almost felt that she could reach out and touch the walkers. Grunting and heavy breathing: Malcolm out of condition and out of breath, and the frozen air making him wheeze. His companion seemed fitter. Vera waited. Sometimes it seemed she’d spent her childhood waiting, heart thumping. Waiting for Hector or for the police, startled by the noise of sudden wingbeats or heavy footsteps.

Now there was an expected sound: her quarry sliding the last few feet onto the flat beach. And at last she could see them, two dark figures walking towards the water, shadows in the moonlight. Vera shifted her stiff and frozen limbs and began to move. For such a heavy woman she walked quietly. She’d been a heavy child and Hector’s jeers had made her conscious of every footstep. For Christ’s sake, girl, do you want us both to end up in prison?

At the bottom of the dunes she paused. Now she could hear voices. One voice. It was Malcolm, and it seemed that he would never stop or even pause for breath. This was a slow, relentless stream of bitter accusation, a rasping whisper, the voice almost of a lover betrayed. Vera thought he would only stop speaking when the object of his hatred was dead.

And that was when she raised her voice and bellowed too, shining her torch towards them, each word spoken slowly and given equal emphasis. ‘No more killing.’

Chapter Forty-Two