“And I was contaminated as a result," said Ariel. "Does this mean I've become famous? I'm not ashamed of what I did-but then again, I'm not especially proud of my disease, either. I'm slowly going mad, and I've got to get off this world to obtain the proper medical attention."

"I could use some myself," said Derec. "I'd like to know who I am."

"Naturally," said Avery. But he said nothing else, and the others waited for several seconds, each thinking that he would add the words they hoped to hear. "But I have other plans," he finally said off-handedly.

"What other plans?" Derec exclaimed, making a frantic gesture. "What could possibly be more important than getting Ariel to a doctor?"

But Avery said nothing. He merely sat down in a chair and crossed his legs. He robbed his face and then ran his hand through his hair. His brows knitted as if he was concentrating deeply, but exactly about what remained a mystery.

"Excuse me, Dr. Avery, but being examined by a diagnostic robot was no help," said Ariel. "I need human attention as quickly as possible."

"Perhaps a diagnostic robot native to the city will better know what to look for," said Avery, "which after all is half the battle when it comes to medicine."

"Unfortunately, Dr. Avery, that seems not to be the case," said Mandelbrot. "Mistress Ariel was examined by Surgeon Experimental 1 and Human Medical Research 1 during the recuperation of Jeff Leong from his experimental surgery. They were able to determine only that her illness was beyond their abilities of diagnosis and treatment. They have not been affected by the strangely intuitive thinking that is rapidly becoming endemic in this place, possibly because they were first activated after the near-disaster from which Master Derec saved Robot City."

"You're sure of that?" Derec asked.

"Not as to the cause, but that they have remained as they were, yes. I have maintained regular contact with them," the robot responded. "They are working on the blood and tissue samples that Mistress Ariel left with them, but have made no breakthroughs. "

"Then I was right." Derec pounded a fist into his other hand. "The only way we can make any progress on a cure is if we add one of the intuitive robots to the medical team."

"I don't think so," said Avery coldly. "In fact, all this so-called intuitive thinking is going to come to a halt rather quickly, as soon as I figure out how to stop it. It's too unpredictable. It must be studied under controlled conditions. Strictly controlled conditions, without robots running around telling jokes."

"That's just too bad," said Derec. "Ariel is going to be cured, one way or the other, and there's nothing you can do to stop me."

Avery's eyes widened. Staring silently at Derec for several moments, he rapped his fingers on the makeup table and crossed and uncrossed his feet. The actions weren't nervous, but they were agitated. "Friend Derec, this city is mine. I created it. I own it. There is no one who understands it better than me."

"Then you should be able to explain quite easily some of the things that have been going on here," Derec snapped.

Avery dismissed the notion with a wave. "Oh, I will, when it's convenient."

"Iss that why 'u crreated it?" Wolruf asked pointedly, her lip curling

"And I can dissect you if I wish," replied Avery evenly. 'The fact that you're the first alien in human captivity almost demands it as the proper scientific response."

"Don't even think about it"' said Derec. "First, Wolruf isn't in captivity; she's our friend. We won't let you so much as X-ray her without her express permission. Understand?"

"The robots accept me as their primary master, and I bet they've already decided that she isn't human. After all, she doesn't remotely look or act human."

"But she is as intelligent as a human, and a robot would certainly be influenced by that," countered Derec. "Your robots just might find themselves unable to complete your orders."

"Only the more intelligent ones," said Avery. "There are many grades of intelligence here, and I can restrict my orders to the lowest forms in the eventuality of any conflicts in that area."

"I think you're underestimating his ability to take control", countered Ariel for Derec.

Avery smiled. "Your friend seems to have great confidence in you," he said to Derec. "I hope it is justified."

"I wouldn't have gotten as far as I have without some ability to turn an unfortunate development around to my advantage," said Derec.

"He'ss had help," said Wolruf.

"I, too, have assisted him, as much as robotically possible," said Mandelbrot, "and shall continue to do so as long as I am functioning. Thanks to Master Derec, I have learned much of what human beings mean by the word 'friend'. "

Avery nodded. He scrutinized Derec with what appeared to be a peculiar combination of pride and anger. It was as if Avery could not make up his own mind about how he felt about this crew and what he wanted to do about them. Derec had the distinct feeling that this man was flying without a navigation computer.

"How did you get here?" asked Derec.

"That is my business and none of yours."

"Did you perchance find a Key to Perihelion? In that case, it wouldn't inconvenience you in the least to permit Ariel and me to use it. I would return as soon as she was being taken care of. "

"I don't know that, and in any case your suggestion is immaterial. I have no such Key."

"Then you've arrived in a spacecraft," said Derec, forcing the issue in an effort to do exactly what he had been doing since he had awakened in the survival pod: turn things around to his advantage. "Where is it?"

Avery laughed uproariously. "I'm not going to tell you!”

“It is ironic, is it not," said Mandelbrot, "that humans, who depend so much upon robots to adhere to the Three Laws, cannot be programmed to obey them."

"Thiss one exis'ss ou'side lawss of 'ur kind," said Wolruf.

Avery regarded the alien in a new light. "If what you're saying means what I think it does, then you're absolutely correct."

"Is this how you get your kicks," asked Derec, "by jeopardizing the lives of innocent people?"

Now a light of an entirely different sort blazed in Avery's eyes. "No, by disregarding the lives of innocent people. The only thing that matters is my work. And my work would never get done if I allowed my behavior to be restricted by so-called humanitarian considerations. "

"Is that why you left the city for so long, to get your work done? To start other colonies?" Derec asked.

"I was away, and that is all you need to know." Avery put his hand in his pocket, pulled out a small device and pointed it at Mandelbrot. The device resembled a pinwheel, but it made a strange hissing sound when it moved, and the sparks, instead of corning out of the wheel, came out of Mandelbrot!

Ariel screamed.

"What are you doing to him?" Derec asked, rushing to his robot's side.

Wolruf squatted, and her hindquarters twitched as if She was about to make a leap at Avery. Avery looked at her and said, "Careful. I can make it easier on him-or I can make it worse!"

Wolruf straightened up, but she warily kept her eye on Avery, searching for an opportunity to strike.

Derec was so angry that his intentions were the same, though he was hoping he wasn't being that obvious about it. But at the moment he was preoccupied with trying to keep Mandelbrot standing, or at least leaning against the wall, though he wasn't sure what difference it would make.

Mandelbrot quivered as the sparks spat out of his joints and every opening in his face. His pseudo-muscular coordination was in an advanced state of disruption; his arms and legs flailed spastically and an eerie moan rose from his speaker grill like a ghostly wail. Derec pushed him flat against the wall, and was struck several times by the robot's uncontrollable hands and elbows. Despite Derec's efforts, however, Mandelbrot slid onto the floor, and Derec sat on him, trying to keep the writhing robot down. But Mandelbrot was too strong, and finally it was all Derec could do to get out of harm 's way.