Derec had had a good point about the robots, though: they were ultimately less useful than a regular robot. Avery would have to make sure that the ones he created were more stringently programmed than Janet’s.

Drat! In his haste to leave his old lab he’d forgotten the memcubes with their recordings. He cursed his momentary lapse, but it really hadn’t been his fault. How could a man work with so many distractions?

He put the memcubes out of his mind. He didn’t need them anyway. He had no intention of using Janet’s programming; he would create his own when he needed it.

Janet, though. He wondered why she was here in his city. No doubt to retrieve her robots, but he wondered if that was all. Could she still care about him, after all the bitter accusations they had hurled at one another in parting? It seemed impossible, yet Avery couldn’t help thinking it might still be true. There was evidence to support the idea. She had loosed all three of her robots on planets with his cities on them, after all. If she really were intent on avoiding him, she would have chosen other planets.

Good grief, were those robots of hers actually spies? They could have been…Yes, of course, and when he’d shut them off she’d sent another robot spy to take their place. All that business about searching for the Laws of Humanics had just been a smoke screen.

What was she after? Not his city programming; she could have gotten that anywhere. He hadn’t exactly been discreet in its deployment. No, she’d been following him, and there could only be one reason for that.

Avery laughed. The thought of Janet harboring affection for him after all this time seemed somehow pathetic. She’d been so careful to let him know how she felt only contempt for him when she’d left-but she’d evidently been fooling herself all along.

Well, if she expected some kind of reconciliation, she was due for a disappointment. Avery had no intention of including her in any of his future plans. Her underutilized robot material, yes; he would find a use for that, but Janet would have to take care of herself.

Derec sat alone in his study, contemplating the scenery in the viewscreen. He had instructed it to display a realtime image from directly overhead: what he would see out a real window if the apartment were on the surface instead of underground. It was a peaceful sight, the last few rays of golden light from the setting sun peeking through gaps in the forest canopy, spotlighting leaves or vines or gnarled tree trunks at random-but Derec felt far from peaceful even so.

He couldn’t get his mind off his mother. She was here; she had to be, but other than that one fact he knew nothing at all. Was she here merely to collect her robots, or did she have more than that in mind? If she did, did he want to help her do whatever it was she had come to do, or not? Was she as cold and cruel as Avery had insinuated in those few moments when Derec had managed to get him talking about her, or was she more…maternal? He didn’t know. He had racked his memory for traces of her, but whatever Avery had done to induce his amnesia had been especially thorough in wiping out references to that part of his life. She was a complete mystery to him. He didn’t even know her name.

He could probably find her through the computer, but every time he’d made a move to do it; he had stopped, the command dying on his lips. He really didn’t know if he could handle meeting her. Life with Avery was such a struggle, swinging from aloofness to trust to anger to contempt almost at random; he didn’t think he could bear another relationship of that sort. If his mother were just another Avery, then maybe he was better off without her.

What sort of person would marry a man like Avery, have a son with him, and then leave? What sort of person would create a kind of baby robot and abandon three of them on three different worlds? When he expressed the question like that, he didn’t much like the answer, but he knew those acts didn’t necessarily define the person. She might have had a perfectly good reason for doing them. No doubt she did; she had come back for her robots, after all. That implied a purpose.

But had she come back for him as well? He didn’t know.

He might never know if he didn’t make some move to find out. And not knowing was just as bad as knowing she hadn’t.

“Central,” he said suddenly, swiveling around in his chair to face the monitor. “See if you can find-” He stopped, mouth agape. His desktop was covered in formula again.

“Find what, Master Derec?”

“Who did this?”

“That information is-”

“Unavailable. Right. I think we’ve gone through this before. Can you record it?”

“I regret that I may not.” May not, Derec noticed. Someone had ordered it not to. It was a test, then, to see what he’d do. That smacked of Avery, but somehow this didn’t have the flavor of an Avery test. Avery would have carved the formula on the door to the Personal and ordered it not to let him in until he solved it. No, this had come from someone else, and Derec knew who that someone had to be. She had to be watching him, then, to have known he was in his study.

Well, he’d already made the decision, right? He looked into the monitor, smiled, and said, “Hi, Mom.”

Janet couldn’t help laughing. He’d seen right through her little subterfuge in an instant. The way he stared out of the screen at her, she almost thought he could see through that as well, but she knew her earlier order not to allow two-way communication was still in effect.

“I know you’re watching me,” he said.

Should she respond? She rejected the idea immediately. She couldn’t bring herself to do it, knowing all the questions and accusations and…emotions…it would lead to.

“I’ve got your robots here.” He paused, frowning, then said, “I don’t mean that like it sounds. I’m not holding them hostage or anything; this is just where they are.” He rubbed his chin in thought, then added, “They’re really mixed up, you know? They have to follow the Three Laws, but they don’t know what ‘human’ is, so their loyalty varies with every new situation. They’re trying to figure out the rest of the rules, too, but they don’t even know what game they’re playing. I think they’d like to know what you made them for. For that matter, r d like to know what you made them for.”

Derec looked down at his desktop, still displaying the bas-relief image of the robotics formula, and whispered” And while you’re at it, I’d like to know what you made me for, too.”

“Oh, spare me,” Janet said. “I’ve seen enough.” Her monitor obediently went gray, and she leaned back in her chair. “See what happens?” she asked Basalom, who stood just to her left. “The minute you get two people together-even when the conversation is one-way-things start to get mushy. People are so…so… .biological.”

“Yes, they are.”

Janet laughed. “You’ve noticed, eh? And what conclusions have you drawn?”

Basalom made a great show of pursing his vinyl lips and blinking before he said, “Biological systems are less predictable than electromechanical ones. That can be both a handicap and an asset, depending upon the circumstances. “

“Spoken like a true philosopher. And which do you think is preferable in the long run? Biological or electromechanical?”

Basalom attempted a smile. “To quote a popular saying: ‘The grass is always greener on the other side.”

Janet laughed. “Touche, my friend. Touche.”