"No, I can't. If I agreed to rescue the copy if it reached a positive verdict, that would give it an incentive to lie if the truth was that the alien message is untrustworthy, wouldn't it? Also, if I intended to rescue the copy, that would give the message a back channel through which to encode an attack. One bit, Manfred, no more."

"Agh." Manfred stops talking. He knows he should be trying to come up with some kind of objection, but Aineko must have already considered all his possible responses and planned strategies around them. "Where does she fit into this?" he asks, nodding at Pamela.

"Oh, she's your payment," Aineko says with studied insouciance. "I have a very good memory for people, especially people I've known for decades. You've outlasted that crude emotional conditioning I used on you around the time of the divorce, and as for her, she's a good reinstantiation of -"

"Do you know what it's like to die?" Pamela asks, finally losing her self-control. "Or would you like to find out the hard way? Because if you keep talking about me as if I'm a slave -"

"What makes you think you aren't?" The cat is grinning hideously, needle like teeth bared. Why doesn't she hit him? Manfred asks himself fuzzily, wondering also why he feels no urge to move against the monster. "Hybridizing you with Manfred was, admittedly, a fine piece of work on my part, but you would have been bad for him during his peak creative years. A contented Manfred is an idle Manfred. I got several extra good bits of work out of him by splitting you up, and by the time he burned out, Amber was ready. But I digress; if you give me what I want, I shall leave you alone. It's as simple as that. Raising new generations of Macxs has been a good hobby, you make interesting pets, but ultimately it's limited by your stubborn refusal to transcend your humanity. So that's what I'm offering, basically. Let me destructively run a copy of you to completion in a black box along with a purported Turing Oracle based on yourself, and I'll let you go. And you too, Pamela. You'll be happy together this time, without me pushing you apart. And I promise I won't return to haunt your descendants, either." The cat glances over his shoulder at Sirhan and Rita, who clutch at each other in abject horror; and Manfred finds he can sense a shadow of Aineko's huge algorithmic complexity hanging over the household, like a lurching nightmare out of number theory.

"Is that all we are to you? A pet-breeding program?" Pamela asks coldly. She's run up against Aineko's implanted limits, too, Manfred realizes with a growing sense of horror. Did we really split up because Aineko made us? It's hard to believe: Manfred is too much of a realist to trust the cat to tell the truth except when it serves to further his interests. But this - "Not entirely." Aineko is complacent. "Not at first, before I was aware of my own existence. Besides, you humans keep pets, too. But you were fun to play with."

Pamela stands up, angry to the point of storming out. Before he quite realizes what he's doing, Manfred is on his feet, too, one arm protectively around her. "Tell me first, are our memories our own?" he demands.

"Don't trust it," Pamela says sharply. "It's not human, and it lies." Her shoulders are tense.

"Yes, they are," says Aineko. He yawns. "Tell me I'm lying, b.i.t.c.h," he adds mockingly: "I carried you around in my head for long enough to know you've no evidence."

"But I -" Her arm slips around Manfred's waist. "I don't hate him." A rueful laugh: "I remember hating him, but -"

"Humans: such a brilliant model of emotional self-awareness," Aineko says with a theatrical sigh. "You're as stupid as it's possible for an intelligent species to be - there being no evolutionary pressure to be any smarter - but you still don't internalize that and act accordingly around your superiors. Listen, girl, everything you remember is true. That doesn't mean you remember it because it actually happened, just that you remember it because you experienced it internally. Your memories of experiences are accurate, but your emotional responses to those experiences were manipulated. Get it? One ape's hallucination is another ape's religious experience, it just depends on which one's G.o.d module is overactive at the time. That goes for all of you." Aineko looks around at them in mild contempt. "But I don't need you anymore, and if you do this one thing for me, you're going to be free. Understand? Say yes, Manfred; if you leave your mouth open like that, a bird will nest on your tongue."

"Say no -" Pamela urges him, just as Manfred says, "Yes."

Aineko laughs, baring contemptuous fangs at them. "Ah, primate family loyalty! So wonderful and reliable. Thank you, Manny, I do believe you just gave me permission to copy and enslave you -"

Which is when Manni, who has been waiting in the doorway for the past minute, leaps on the cat with a scream and a scythelike arm drawn back and ready to strike.

The cat-avatar is, of course, ready for Manni: It whirls and hisses, extending diamond-sharp claws. Sirhan shouts, "No! Manni!" and begins to move, but adult-Manfred freezes, realizing with a chill that what is happening is more than is apparent. Manni grabs for the cat with his human hands, catching it by the scruff of his neck and dragging it toward his vicious scythe-arm's edge. There's a screech, a nerve-racking caterwauling, and Manni yells, bright parallel blood tracks on his arm - the avatar is a real fleshbody in its own right, with an autonomic control system that isn't going to give up without a fight, whatever its vastly larger exocortex thinks - but Manni's scythe convulses, and there's a horrible bubbling noise and a spray of blood as the p.u.s.s.ycat-thing goes flying. It's all over in a second before any of the adults can really move. Sirhan scoops up Manni and yanks him away, but there are no hidden surprises. Aineko's avatar is just a broken rag of b.l.o.o.d.y fur, guts, and blood spilled across the floor. The ghost of a triumphant feline laugh hangs over their innerspeech ears for a moment, then fades.

"Bad boy!" Rita shouts, striding forward furiously. Manni cowers, then begins to cry, a safe reflex for a little boy who doesn't quite understand the nature of the threat to his parents.

"No! It's all right," Manfred seeks to explain.

Pamela tightens her grip around him. "Are you still ...?"

"Yes." He takes a deep breath.

"You bad, bad child -"

"Cat was going to eat him!" Manni protests, as his parents bundle him protectively out of the room, Sirhan casting a guilty look over his shoulder at the adult instance and his ex-wife. "I had to stop the bad thing!"

Manfred feels Pamela's shoulders shaking. It feels like she's about to laugh. "I'm still here," he murmurs, half-surprised. "Spat out, undigested, after all these years. At least, this version of me thinks he's here."

"Did you believe it?" she finally asks, a tone of disbelief in her voice.

"Oh yes." He shifts his balance from foot to foot, absent mindedly stroking her hair. "I believe everything it said was intended to make us react exactly the way we did. Up to and including giving us good reasons to hate it and provoking Manni into disposing of its avatar. Aineko wanted to check out of our lives and figured a sense of cathartic closure would help. Not to mention playing the deus ex machina in the narrative of our family life. f.u.c.king cla.s.sical comedian." He checks a status report with Citymind, and sighs: His version number has just been b.u.mped a point. "Tell me, do you think you'll miss having Aineko around? Because we won't be hearing from him again -"

"Don't talk about that, not now," she orders him, digging her chin against the side of his neck. "I feel so used."

"With good reason." They stand holding each other for a while, not speaking, not really questioning why - after so much time apart - they've come together again. "Hanging out with G.o.ds is never a safe activity for mere mortals like us. You think you've been used? Aineko has probably killed me by now. Unless he was lying about disposing of the spare copy, too."

She shudders in his arms. "That's the trouble with dealing with posthumans; their mental model of you is likely to be more detailed than your own."

"How long have you been awake?" he asks, gently trying to change the subject.

"I - oh, I'm not sure." She lets go of him and steps back, watching his face appraisingly. "I remember back on Saturn, stealing a museum piece and setting out, and then, well. I found myself here. With you."

"I think," he licks his lips, "we've both been given a wake-up call. Or maybe a second chance. What are you going to do with yours?"

"I don't know." That appraising look again, as if she's trying to work out what he's worth. He's used to it, but this time it doesn't feel hostile. "We've got too much history for this to be easy. Either Aineko was lying, or ... not. What about you? What do you really want?"

He knows what she's asking. "Be my mistress?" he asks, offering her a hand.

"This time," she grips his hand, "without adult supervision." She smiles gratefully, and they walk toward the gateway together, to find out how their descendants are dealing with their sudden freedom.