"You said 'supposedly'."

"Slip, have you noticed anything strange about DON lately?"

Mr. Slippery thought back. DON.MAC had always been the most extreme of the werebots — after the Mailman. He was not an especially talented fellow, but he did go to great lengths to sustain the image that he was both machine and human. His persona was always present in this plane, though at least part of the time it was a simulator like Alan out in the magma moat. The simulation was fairly good, but no one had yet produced a program that could really pass the Turing test: that is, fool a real human for any extended time. Mr. Slippery remembered the silly smile that seemed pasted on DON's face and the faintly repetitive tone of his lobbying for the Mailman. "You think the real person behind DON is gone, that we have a zombie up there?"

"Slip, I think the real DON is dead, and I mean the True Death."

"Maybe he just found the real world more delightful than this, now that he owns such a big hunk of it?"

"I don't think he owns anything. It's just barely possible that the Mailman had something to do with that coup ; there are a number of coincidences between what they told Wiley beforehand and what actually happened. But I've spent a lot of time floating through the Venezuelan data bases, and I think I'd know if an outsider were on the scene, directing the new order.

"I think the Mailman is taking us on one at a time, starting with the weakest, drawing us in far enough to learn our True Names — and then destroying us. So far he has only done it to one of us. I've been watching DON.MAC both directly and automatically since the coup, and there has never been a real person behind that facade, not once in two thousand hours. Wiley is next. The poor slob hasn't even been told yet what country his kingdom is to be — evidence that the Mailman doesn't really have the power he claims — but even so, he's ready to do practically anything for the Mailman, and against us.

"Slip, we have got to identify this thing, this Mailman, before he can get us."

She was even more upset than Virginia and the Feds. And she was right. For the first time, he felt more afraid of the Mailman than the government agents. He held up his hands. "I'm convinced. But what should we do? You've got the best angle in Wiley. The Mailman doesn't know you've got a tap through him, does he?"

She shook her head. "Wiley is too chicken to tell him, and doesn't realize that I can do this with his True Name. But I'm already doing everything I can with that. I want to pool information, guesses, with you. Between us maybe we can see something new." "Well for starters, it's obvious that the Mailman's queer communication style — those long time delays — is a ploy. I know that fellow is listening all the time to what's going on in the Coven meeting hall. And he commands a number of sprites in real time." Mr. Slippery remembered the day the Mailman — or at least his teleprinter — had arrived. The image of an American Van Lines truck had pulled up at the edge of the moat, nearly intimidating Alan. The driver and loader were simulators, though good ones. They had answered all of Alan's questions correctly, then hauled the shipping crate down to the meeting hall. They hadn't left till the warlocks signed for the shipment and promised to "wire a wall outlet" for the device. This enemy definitely knew how to arouse the curiosity of his victims. Whoever controlled that printer seemed perfectly capable of normal behavior. Perhaps it's someone we already know, like in the mysteries where the murderer masquerades as one of the victims. Robin Hood? "I know. In fact, he can do many things faster than I. He must control some powerful processors. But you're partly wrong: the living part of him that's behind it all really does operate with at least a one-hour turnaround time. All the quick stuff is programmed."

Mr. Slippery started to protest, then realized that she could be right. "My God, what could that mean? Why would he deliberately saddle himself with that disadvantage?"

Erythrina smiled with some satisfaction. "I'm convinced that ff we knew that, we'd have this guy sighted. I agree it's too great a disadvantage to be a simple red herring. I think he must have some time-delay problem to begin with, and — "

" — and he has exaggerated it?" But even ff the Mailman were an Australian, the low satellite net made delays so short that he would probably be indistinguishable from a European or a Japanese. There was no place on Earth where… but there are places off Earth! The mass-transmit satellites were in synchronous orbit 120 milliseconds out. There were about two hundred people there. And further out, at L5, there were at least another four hundred. Some were near-permanent residents. A strange idea, but still a possibility.

"I don't think he has exaggerated. Slip, I think the Mailman — not his processors and simulators, you understand — is at least a half-hour out from Earth, probably in the asteroid belt."

She smiled suddenly, and Mr. Slippery realized that his jaw must be resting on his chest. Except for the Joint Mars Recon, no human had been anywhere near that far out. No human . Mr. Slippery felt his ordinary, everyday world disintegrating into sheer science fiction. This was ridiculous.

"I know you don't believe; it took me a while to. He's not so obvious that he doesn't add in some time delay to disguise the cyclic variation in our relative positions. But it is a consistent explanation for the delay. These last few weeks I've been sniffing around the classified reports on our asteroid probes; there are definitely some mysterious things out there."

"Okay. It's consistent. But you're talking about an interstellar invasion . Even if NASA had the funding, it would take them decades to put the smallest interstellar probe together — and decades more for the flight. Trying to invade anyone with those logistics would be impossible. And ff these aliens have a decent stardrive, why do they bother with deception? They could just move in and brush us aside."

"Ah, that's the point, Slip. The invasion I'm thinking of doesn't need any "stardrive," and it works fine against any race at exactly our point of development. Right: most likely interstellar war is a fantastically expensive business, with decade lead times. What better policy for an imperialistic, highly technological race than to lie doggo listening for evidence of younger civilizations? When they detect such, they send only one ship. When it arrives in the victims' solar system, the Computer Age is in full bloom there. We in the Coven know how fragile the present system is; it is only fear of exposure that prevents some warlocks from trying to take over. Just think how appealing our naivete must be to an older civilization that has thousands of years of experience at managing data systems. Their small crew of agents moves in as close as local military surveillance permits and gradually insinuates itself into the victims' system. They eliminate what sharp individuals they detect in that system — people like us — and then they go after the bureaucracies and the military. In ten or twenty years, another fiefdom is ready for the arrival of the master race."

She lapsed into silence, and for a long moment they stared at each other. It did all hang together with a weird sort of logic. "What can we do, then?"

"That's the question." She shook her head sadly, came across the room to sit beside him. Now that she had said her piece, the fire had gone out of her. For the first time since he had known her, Erythrina looked depressed. "We could just forsake this plane and stay in the real world. The Mailman might still be able to track us down, but we'd be of no more interest to him than anyone else. If we were lucky, we might have years before he takes over." She straightened. "I'll tell you this: if we want to live as warlocks, we have to stop him soon — within days at most. After he gets Wiley, he may drop the con tactics for something more direct.