The image blurred. He had seen her once. His knuckles went white as bleached bone on the bars. He concentrated every atom of his will. _Ylia, Ylia!_ But now with his eyes shut he saw nothing. With his eyes opened, only the bars of his cell and the cell-block corridor beyond. _Ylia, Ylia! Hear me. There is danger on the road to Nadia. Ylia...._ CHAPTER XI _On the Ice Fields of Nadia_ B'ronth the Utalian left footprints in the snow. Otherwise, B'ronth was invisible. But if a hidden observer watched the Utalian's slow progress across the ice fields of Nadia he would see where the ice was soft or where snow had fallen during the night into the gullies, the unexpected, mysterious appearance of footprints, a left staggered after a right, then another left, then a right again, then a left. Actually, B'ronth the Utalian was not invisible. But like all Utalians, he was a chameleon of a man. Within seconds his skin would assume the color of its environment, utterly and completely. Thus, from above B'ronth the Utalian was the dazzling white of the Nadian ice-fields; from below, looking up at the pale cloudless sky, he was cold, transparent blue. All morning he had been trailing the girl. He had reached her camp on the road to Nadia only moments after she had quit it in company with an old man. From the tattered snow cloaks they wore, they both clearly were wayfarers. B'ronth could have challenged them at once, sprinting across the ice toward them, but he hadn't done that. B'ronth the Utalian was a coward. He accepted the fact objectively: his people were notorious cowards. The proper time would come, he told himself. There would come a time when the girl and the old man were helpless. Then he, B'ronth, would strike. The day before an Abarian warrior had given him a description of the girl and had promised him a bag of gold for her capture, half a bag of gold if he killed her and could prove it. A bag of gold, he thought. He would take her alive. It was a long, cold road to Nadia City. True, B'ronth the Utalian was small of stature, a puny creature like all his people. And there were certain disadvantages in his perfect camouflage. He was walking naked across the ice-fields in order to remain unseen. His flesh shivered and his bones were stiff. But a Nadian boy named Lulukee, whom B'ronth had promised half the gold, was not many minutes' march behind him with warm clothing, food, and drink. After he captured the girl.... * * * * * Invisible, he mounted a rise where solid sheet ice adhered to the shoulder of a rocky hill. Below him, traversing a snow-floored valley and so far away that they were mere dots against the snow, were the old man and the girl.