It seemed incredible, yet Harry Scott knew he had not been mistaken. It had been Dr. Webber's face he had seen, a face no one could forget, an unmistakable face. And that meant that it had been Dr. Webber who had been persecuting him.

But why? He had been going to report to Webber when he had run into that golden field in the rooming-house hallway. And suddenly things had changed.

Harry felt a chill reaching to his fingers and toes. Yes, something had changed, all right. The attack on him had suddenly become butcherous, cruel, sneaking into his mind somehow to use his most dreaded nightmares against him. There was no telling what new horrors might be waiting for him. But he knew that he would lose his mind unless he could find an escape.

He was on his feet, his heart pounding. He had to get out of here, wherever he was. He had to get back to town, back to the city, back to where people were. If he could find a place to hide, a place where he could rest, he could try to think his way out of this ridiculous maze, or at least try to understand it.

He wrenched at the door to the passageway, started through, and smashed face-up against a solid brick wall.

He cried out and jumped back from the wall. Blood trickled from his nose. The door was walled up, the mortar dry and hard.

Frantically, he glanced around the room. There were no other doors, only the row of tiny windows around the ceiling of the room, pale, ghostly squares of light.

He pulled the chair over to the windows, peered out through the cobwebbed openings to the corridor beyond.

It was not the same hallway as before, but an old, dirty building corridor, incredibly aged, with bricks sagging away from the walls. At the end he could see stairs, and even the faintest hint of sunlight coming from above.

Wildly, he tore at the masonry of the window, chipping away at the soggy mortar with his fingers until he could squeeze through the opening. He fell to the floor of the corridor outside.

It was much colder and the silence was no longer so intense. He seemed to feel, rather than hear, the surging power, the rumble of many machines, the little, almost palpable vibrations from far above him.

He started in a dead run down the musty corridor to the stairs and began to climb them, almost stumbling over himself in his eagerness.

After several flights, the brick walls gave way to cleaner plastic, and suddenly a brightly lighted corridor stretched before him.

Panting from the climb, Harry ran down the corridor to the end, wrenched open a door, and looked out anxiously.

He was almost stunned by the bright light. At first he couldn't orient himself as he stared down at the metal ramp, the moving strips of glowing metal carrying the throngs of people, sliding along the thoroughfare before him, unaware of him watching, unaware of any change from the usual. The towering buildings before him rose to unbelievable heights, bathed in ever-changing rainbow colors, and he felt his pulse thumping in his temples as he gaped.

He was in the New City, of that there was no doubt. This was the part of the great metropolis which had been built again since the devastating war that had nearly wiped the city from the Earth a decade before. These were the moving streets, the beautiful residential apartments, following the modern neo-functional patterns and participational design which had completely altered the pattern of city living. The Old City still remained, of course—the slums, the tenements, the skid-rows of the metropolis—but this was the teeming heart of the city, a new home for men to live in.

And this was the stronghold where the not-men could be found, too. The thought cut through Harry's mind, sending a tremor up his spine. He had found them here; he had uncovered his first clues here, and discovered them; and even now his mind was filled with the horrible, paralyzing fear he had felt that first night when he had made the discovery. Yet he knew now that he dared not go back where he had come from.

At least he could understand why the not-men might have feared and persecuted him, but he could not understand the horrible assault that Dr. Webber had unleashed. And somehow he found Dr. Webber's attack infinitely more frightening.

He seemed to be safe here, though, at least for the moment.

Quickly he moved down onto the nearest moving sidewalk heading toward the living section of the New City. He knew where he could go there, where he could lock himself in, a place where he could think, possibly find a way to fight off Dr. Webber's attack of nightmares.

He settled back on a bench on the moving sidewalk, watching the city slide past him for several minutes before he noticed the curious shadow-form which seemed to whisk out of his field of vision every time he looked.

They were following him again! He looked around wildly as the sidewalk moved swiftly through the cool evening air. Far above, he could see the shimmering, iridescent screen that still stood to protect the New City from the devastating virus attacks which might again strike down from the skies without warning. Far ahead he could see the magnificent "bridge" formed by the sidewalk crossing over to the apartment area, where the thousands who worked in the New City were returning to their homes.

Someone was still following him.

Presently he heard the sound, so close to his ear he jumped, yet so small he could hardly identify it as a human voice. "What was it you found, Harry? What did you discover? Better tell, better tell."

He saw the rift in the moving sidewalk coming, far ahead, a great, gaping rent in the metal fabric of the swiftly moving escalator, as if a huge blade were slicing it down the middle. Harry's hand went to his mouth, choking back a scream as the hole moved with incredible rapidity down the center of the strip, swallowing up whole rows of the seats, moving straight toward his own.

He glanced in fright over the side just as the sidewalk moved out onto the "bridge," and he gasped as he saw the towering canyons of buildings fall far below, saw the seats tumble end over end, heard the sounds of screaming blend into the roar of air by his ears.

Then the rift screamed by him with a demoniac whine and he sank back onto his bench, gasping as the two cloven halves of the strip clanged back together again.

He stared at the people around him on the strip and they stared back at him, mildly, unperturbed, and returned to their evening papers as the strip passed through the first local station on the other side of the "bridge."

Harry Scott sprang to his feet, moving swiftly across the slower strips for the exit channels. He noted the station stop vaguely, but his only thought now was speed, desperate speed, fear-driven speed to put into action the plan that had suddenly burst in his mind.

He knew that he had reached his limit. He had come to a point beyond which he couldn't fight alone.

Somehow, Webber had burrowed into his brain, laid his mind open to attacks of nightmare and madness that he could never hope to fight. Facing this alone, he would lose his mind. His only hope was to go for help to the ones he feared only slightly less, the ones who had minds capable of fighting back for him.

He crossed under the moveable sidewalks and boarded the one going back into the heart of the city. Somewhere there, he hoped, he would find the help he needed. Somewhere back in that city were men he had discovered who were men and something more.

---

Frank Manelli carefully took the blood pressure of the sleeping figure on the bed; then turned to the other man. "He'll be dead soon," he snapped. "Another few minutes now is all it'll take. Just a few more."

"Absurd. There's nothing in these stimuli that can kill him." George Webber sat tense, his eyes fixed on the pale fluctuating screen near the head of the bed.

"His own mind can kill him! He's on the run now; you've broken him loose from his nice safe paranoia. His mind is retreating, running back to some other delusions. It's escaping to the safety his fantasy people can afford him, these not-men he thinks about."

"Yes, yes," agreed Dr. Webber, his eyes eager. "Oh, he's on the run now."

"But what will he do when he finds there aren't any 'not-men' to save him? What will he do then?"

Webber looked up, frowning and grim. "Then we'll know what he found behind the dark door that he opened, that's what."

"No, you're wrong! He'll die. He'll find nothing and the shock will kill him. My God, Webber, you can't tamper with a man's mind like this and hope to save his life! You're obsessed; you've always been obsessed by this impossible search for something in our society, some undiscovered factor to account for the mental illness, the divergent minds, but you can't kill a man to trace it down!"

"It's too neat," said Webber. "He comes back to tell us the truth, and we call him insane. We say he's paranoid, throw him in restraint, place him in an asylum; and we never know what he found. The truth is too incredible; when we hear it, it must be insanity we're hearing."

The big doctor laughed, jabbing his thumb at the screen. "This isn't insanity we're seeing. Oh, no, this is the answer we're following. I won't stop now. I've waited too long for this show."

"Well, I say stop it while he's still alive."

Dr. Webber's eyes were deadly. "Get out, Frank," he said softly. "I'm not stopping now."

His eyes returned to the screen, to the bobbing figure that the psycho-integrator traced on the fluorescent background. Twenty years of search had led him here, and now he knew the end was at hand.

---