The sound came again, cutting through the night: a sharp, metallic tap that carried even up to the first floor of the house where Sam lay sleeping. Ella stood over him and listened for it again but all she heard was rain spattering against the window. There was a storm coming -- a fine start to the summer holidays -- but that wasn't the problem.
The problem was being alone in the house at ten o'clock at night looking after Sam. She wished now that Fin hadn't slipped out to see Billy but it was her own fault: She'd insisted he go, telling him Mom and Dad would never know as long as he was back before they returned from...