CHAPTER 4 It was the most hellish nightmare Sam had ever experienced. The pain in his head was his torture master, driving the time traveler down pitch black corridors, crowding him, not giving him an instant to pause nd consider what was happening. A cloak of fear had fallen over him as he stumbled and crawled deeper into the darkness. A clammy feeling of helplessness made Sam tremble as the vicious pain in his head grew. He tried to shake his head, to loosen the claws that seemed to be digging into his skull but he was prevented. Though he couldn't quite understand what words were being said, his mind recognized the concern with which they were spoken. The startling but easing sensation of cold covering his face and head helped a little. As the pain continued to drive him through the blackness, he felt something, like something or someone had brushed against him in passing. Then, he heard the voice, recognizing the same note of cruel amusement he had heard before, and the fear crawled over him. *Hi, Sam. How's tricks? We'll talk later. Don't go away!* Then Sam was alone in the inky black silence, and the only thing he could be grateful for at that moment was that the pain had mercifully subsided. But where was he? Where was Al?