A second set of running feet went past the computer room and continued down the corridor, fading into echoes. Everything was quiet. Then she heard heavy breathing and a cough.

She stood.

Harry Benson, in his torn white orderly's clothes, his left leg very red, was sprawled on the carpet, his body half-propped up against the wall. He was sweating; his breath came in ragged gasps; he stared straight ahead, unaware of anyone else in the room.

She still held the gun in her hand, and she felt a moment of elation. Somehow it was all going to work out. She was going to get him back alive. The police hadn't killed him, and by the most unbelievable stroke of luck she had him alone, to herself. It made her wonderfully happy.

"Harry."

He looked over slowly and blinked. He did not seem to recognize her for a moment, and then he smiled. "Hello, Dr. Ross."

It was a nice smile. She had the brief image of McPherson, with his white hair, bending over to congratulate her on saving the project and getting Benson back alive. And then she remembered, quite incongruously, how her own father had gotten sick and had suddenly had to leave her medical-school graduation ceremonies. Why did she think of that now?

"Everything is going to be all right, Harry," she said. Her voice was full of confidence; it pleased her.

She wanted to reassure him, so she did not move, did not approach him. She stayed across the room, behind the computer data bank.

He continued to breathe heavily, and said nothing for a moment. He looked around the room at the demolished computer equipment. "I really did it," he said. "Didn't I?"

"You're going to be fine, Harry," she said. She was drawing up a schedule in her mind. He could undergo emergency surgery on his leg that night, and in the morning they could disconnect his computer, reprogram the electrodes, and everything would be corrected. A disaster would be salvaged. It was the most incredible piece of luck. Ellis would keep his house. McPherson would continue to expand the NPS into new areas. They would be grateful. They would recognize her achievement and appreciate what she-

"Dr. Ross…" He started to get up, wincing in pain.

"Don't try to move. Stay where you are, Harry."

"I have to."

"Stay where you are, Harry."

Benson's eyes flashed briefly, and the smile was gone.

"Don't call me Harry. My name is Mr. Benson. Call me Mr. Benson."

There was no mistaking the anger in his voice. It surprised her and upset her. She was trying to help him.

Didn't he know that she was the only one who still wanted to help him? The others would be just as happy if he died.

He continued to struggle to his feet.

"Don't move, Harry." She showed him the gun then. It was an angry, hostile move. He had angered her. She knew she shouldn't get angry at him, but she had.

He grinned in childish recognition. "That's my gun."

"I have it now," she said.

He still grinned, a fixed expression, partly from pain. He got to his feet and leaned heavily against the wall. There was a dark red stain on the carpet where his leg had rested. He looked down and saw it.

"I'm hurt," he said.

"Don't move. You'll be all right."

"He shot me in the leg…" He looked from the blood up to her. His smile remained. "You wouldn't use that, would you?"

"Yes," she said, "if I had to."

"You're my doctor."

"Stay where you are, Harry."

"I don't think you would use it," Benson said. He took a step toward her.

"Don't come closer, Harry."

He smiled. He took another step, unsteady, but he maintained his balance. "I don't think you would."

His words frightened her. She was afraid that she would shoot him, and afraid that she would not. It was the strangest set of circumstances, alone with this man, surrounded by the wreckage of a computer.

"Anders!" she shouted. "Anders!" Her voice echoed through the basement.

Benson took another step. His eyes never left her face. He started to fall, and leaned heavily on one of the disc drive consoles. It tore his white jacket at the armpit. He looked at the tear numbly. "It tore…"

"Stay there, Harry. Stay there." It's like talking to an animal, she thought. Do not feed or molest the animals. She felt like a lion tamer in the circus.

He hung there a moment, supporting himself on the drive console, breathing heavily. "I want the gun," he said. "I need it. Give it to me."

"Harry- "

With a grunt, he pushed away from the console and continued moving toward her.

"Anders!"

"It's no good," Benson said. "There's no time left, Dr. Ross." His eyes were on her. She saw the pupils expand briefly as he received a stimulation. "That's beautiful," he said, and smiled.

The stimulation seemed to halt him for a time. He was turned inward, enjoying the sensation. When he spoke again, his voice was calm and distant. "You see," he said, "they are after me. They have turned their little computers against me. The program is hunt. Hunt and kill. The original human program. Hunt and kill. Do you understand?"

He was only a few steps away. She held the gun in her hand stiffly, as she had seen Anders hold it. But her hand was shaking badly. "Please don't come closer, Harry," she said.

"Please."

He smiled.

He took another step.

She didn't really know what she was going to do until she found herself squeezing the trigger, and the gun discharged. The noise was painfully loud, and the gun snapped in her hand, flinging her arm up, almost knocking her off her feet. She was thrown back against the far wall of the computer room.

Benson stood blinking in the smoke. Then he smiled again.

"It's not as easy as it looks."

She gripped the gun in her hand. It felt warm now. She raised it, but it was shaking worse than before. She steadied it with the other hand.

Benson advanced.

"No closer, Harry. I mean it."

A flood of images overcame her. She saw Benson as she had first met him, a meek man with a terrifying problem. She saw him in a montage of all the hour-long interviews, all the tests, all the drug trials. He was a good person, an honest and frightened person. Nothing that had happened was his fault. It was her fault, and Ellis's fault, and McPherson's fault, and Morris's fault.

Then she thought of Morris, the face mashed into a red pulp, deformed into butcher meat.

"Dr. Ross," Benson said. "You're my doctor. You wouldn't do anything to hurt me."

He was very close now. His hands reached out for the gun. Her whole body was shaking as she watched the hands move closer, within inches of the barrel, reaching for it, reaching for it…

She fired at point-blank range.

With remarkable agility, Benson jumped and spun in the air, dodging the bullet. She was pleased. She had managed to drive him back without hurting him. Anders would arrive any minute to help subdue him before they took him to surgery.

Benson's body slammed hard into the printing unit, knocking it over. It began to clatter in a monotonous, mechanical way as the keys printed out some message. Benson rolled onto his back. Blood spurted in heavy thick gushes from his chest. His white uniform became darkly red.

"Harry?" she said.

He did not move.

"Harry? Harry?"

She didn't remember clearly what happened after that.

Anders returned and took the gun from her hand. He moved her to the side of the room as three men in gray suits arrived, carrying a long plastic capsule on a stretcher. They opened the capsule up; the inside was lined in a strange, yellow honeycomb insulation. They lifted Benson's body - she noticed they were careful, trying to keep the blood off their special suits - and placed him inside the capsule. They closed it and locked it with special locks. Two of the men carried it away. A third went around the room with a Geiger counter, which chattered loudly. Somehow the sound reminded her of an angry monkey. The man went over to Ross. She couldn't see his face behind the gray helmet he wore; the glass was fogged.

"You better leave this area," the man said.

Anders put his arm around her shoulders. She began to cry.