I WAS SUDDENLY wide awake, my senses tinkling. Had I heard something? The faint glow of pre-dawn light filled my tent, softened by the layer of frost that had formed along its sides. The forest was silent, as if listening as intently as me. A Ural owl hooted in the distance, but the bird is common here and wouldn't have awakened mye. No - it was something else, something that made the hairs on the back of my neck stand up.