"You mean they killed the offspring, killed those who found out about them?"

Ritchie shrugged.

"But what are they actually _doing_? Who is this Dr. Leffingwell?

What's it all about?"

"I think I can answer those questions for you."

Harry wheeled at the sound of the familiar voice.

Dr. Manschoff beamed down at him from the top of the river bank.

"Don't be alarmed," he said. "I wasn't following you with any intent to eavesdrop. I was merely concerned about him." His eyes flickered as he directed his gaze past Harry's shoulder, and Harry turned again to look at Arnold Ritchie.

The little man was no longer standing and he was no longer alone. Two attendants now supported him, one on either side, and Ritchie himself sagged against their grip with eyes closed. A hypodermic needle in one attendant's hand indicated the reason for Ritchie's sudden collapse.

"Merely a heavy sedative," Dr. Manschoff murmured. "We came prepared, in expectation of just such an emergency." He nodded at his companions. "Better take him back now," he said. "I'll look in on him this evening, when he comes out of it."

"Sorry about all this," Manschoff continued, sitting down next to Harry as the orderlies lifted Ritchie's inert form and carried him up the slanting slope. "It's entirely my fault. I misjudged my patient--never should have permitted him such a degree of freedom.

Obviously, he's not ready for it yet. I do hope he didn't upset you in any way."

"No. He seemed quite"--Harry hesitated, then went on hastily--"logical."

"Indeed he is." Dr. Manschoff smiled. "Paranoid delusions, as they used to call them, can often be rationalized most convincingly. And from what little I heard, he was doing an excellent job, wasn't he?"

"Well--"

"I know." A slight sigh erased the smile. "Leffingwell and I are mad scientists, conducting biological experiments on human guinea pigs.

We've a.s.sembled patients for breeding purposes and the government is secretly subsidizing us. Also, we incinerate our victims--again, with full governmental permission. All very logical, isn't it?"

"I didn't mean that," Harry told him. "It's just that he said Sue was pregnant and he was hinting things."

"Said?" Manschoff stood up. "_Hinted?_ I'm surprised he didn't go further than that. Just today, we discovered he'd been using the office facilities--he had a sort of probationary position, as you may have guessed, helping out the staff in administration--to provide tangible proof of his artistic creations. He was writing out 'official reports' and then photostating them. Apparently he intended to circulate the results as 'evidence' to support his delusions. Look, here's a sample."

Dr. Manschoff pa.s.sed a square of glossy paper to Harry, who scanned it quickly. It was another laboratory report similar to the one Ritchie had shown him, but containing a different set of names.

"No telling how long this sort of thing has been going on," Manschoff said. "He may have made dozens. Naturally, the moment we discovered it, we realized prompt action was necessary. He'll need special attention."

"But what's wrong with him?"

"It's a long story. He was a reporter at one time--he may have told you that. The death of his wife precipitated a severe trauma and brought him to our attention. Actually, I'm not at liberty to say any more regarding his case; you understand, I'm sure."

"Then you're telling me that everything he had to say was a product of his imagination?"

"No, don't misunderstand. It would be more correct to state that he merely distorted reality. For example, there _is_ a Dr. Leffingwell on the staff here; he is a diagnostician and has nothing to do with psychotherapy _per se_. And he has charge of the hospital ward in Unit Three, the third building you may have noticed behind Administration.

That's where the nurses maintain residence, of course. Incidentally, when any nurses take on a--special a.s.signment, as it were, such as yours, Leffingwell does examine and treat them. There's a new oral contraception technique he's evolved which may be quite efficacious.

But I'd hardly call it an example of sinister experimentation under the circ.u.mstances, would you?"

Harry shook his head. "About Ritchie, though," he said. "What will happen to him?"

"I can't offer any prognosis. In view of my recent error in judgment concerning him, it's hard to say how he'll respond to further treatment. But rest a.s.sured that I'll do my best for his case. Chances are you'll be seeing him again before very long."

Dr. Manschoff glanced at his watch. "Shall we go back now?" he suggested. "Supper will be served soon."

The two men toiled up the bank.

Harry discovered that the doctor was right about supper. It was being served as he returned to his room. But the predictions concerning Ritchie didn't work out quite as well.

It was after supper--indeed, quite some hours afterwards, while Harry sat at his window and stared sleeplessly out into the night--that he noted the thick, greasy spirals of black smoke rising suddenly from the chimney of the Third Unit building. And the sight may have prepared him for the failure of Dr. Manschoff's prophecy regarding his disturbed patient.

Harry never asked any questions, and no explanations were ever forthcoming.

But from that evening onward, n.o.body ever saw Arnold Ritchie again.

3. President Winthrop--1999

The Secretary of State closed the door.

"Well?" he asked.

President Winthrop looked up from the desk and blinked. "h.e.l.lo, Art,"

he said. "Sit down."

"Sorry I'm late," the Secretary told him. "I came as soon as I got the call."

"It doesn't matter." The President lit a cigarette and pursed his lips around it until it stopped wobbling. "I've been checking the reports all night."

"You look tired."

"I am. I could sleep for a week. That is, I _wish_ I could."

"Any luck?"

The President pushed the papers aside and drummed the desk for a moment. Then he offered the Secretary a gray ghost of a smile.

"The answer's still the same."

"But this was our last chance--"

"I know." The President leaned back. "When I think of the time and effort, the money that's been poured into these projects! To say nothing of the hopes we had. And now, it's all for nothing."

"You can't say that," the Secretary answered. "After all, we did reach the moon. We got to Mars." He paused. "No one can take that away from you. You sponsored the Martian flights. You fought for the appropriations, pushed the project, carried it through. You helped mankind realize its greatest dream--"