DON.MAC turned back to Mr. Slippery. "Slip, you especially should see that we have no choice but to cooperate. They know your True Name . Of the three of us, your life is the most fragile, depending on protecting your body from a government that now considers you a traitor. You would have died a dozen times over during the last thousand seconds if you hadn't used your new powers.

"And you can't go back. Even if you play Boy Scout, destroy me, and return all obedient-even then they will kill you. They know how dangerous you are, perhaps even more dangerous than I. They can't afford to let you exist."

And megalomania aside, that made perfect and chilling sense. As they were talking, a fraction of Mr. Slippery's attention was devoted to confusing and obstructing the small infantry group that had been air-dropped into the Arcata region just before the government lost all control. Their superiors had realized how easily he could countermand their orders, and so the troops were instructed to ignore all outside direction until they had destroyed a certain Roger Pollack. Fortunately they were depending on city directories and orbit-fed street maps, and he had been keeping them going in circles for some time now. It was a nuisance, and sooner or later he would have to decide on a more permanent solution.

But what was a simple nuisance in his present state would be near-instant death if he returned to his normal self. He looked at Erythrina. Was there any way around DON's arguments?

Her eyes were almost shut, and the frown had deepened. He sensed that more and more of her resources were involved in some pattern analysis. He wondered if she had even heard what DON.MAC said. But after a moment her eyes came open, and she looked at the two of them. There was triumph in that look. "You know, Slip, I don't think I have ever been fooled by a personality simulator, at least not for more than a few minutes."

Mr. Slippery nodded, puzzled by this sudden change in topic. "Sure. If you talk to a simulator long enough, you eventually begin to notice little inflexibilities. I don't think we'll ever be able to write a program that could pass the Turing test."

"Yes, little inflexibilities, a certain lack of imagination. It always seems to be the tipoff. Of course DON here has always pretended to be a program, so it was hard to tell. But I was sure that for the last few months there has been no living being behind his mask…

"… and furthermore, I don't think there is anybody there even now ." Mr. Slippery's attention snapped back to DON.MAC. The other smirked at the accusation. Somehow it was not the right reaction. Mr. Slippery remembered the strange, artificial flavor of DON's combat style. In this short an encounter, there could be no really hard evidence for her theory. She was using her intuition and whatever deep analysis she had been doing these last few seconds. "But that means we still haven't found the Mailman." "Right. This is just his best tool. I'll bet the Mailman simply used the pattern he stole from the murdered DON.MAC as the basis for this automatic defense system we've been fighting. The Mailman's time lag is a very real thing, not a red herring at all. Somehow it is the whole secret of who he really is.

"In any case, it makes our present situation a lot easier." She smiled at DON.MAC as though he were a real person. Usually it was easier to behave that way toward simulators; in this case, there was a good deal of triumph in her smile. "You almost won for your master, DON. You almost had us convinced. But now that we know what we are dealing with, it will be easy to — "

Her image flicked out of existence, and Mr. Slippery felt DON grab for the resources Ery controlled. All through near-Earth space, they fought for the weapon systems she had held till an instant before.

And alone, Mr. Slippery could not win. Slowly, slowly, he felt himself bending before the other's force, like some wrestler whose bones were breaking one by one under a murderous opponent. It was all he could do to prevent the DON construct from blast-hag his home; and to do that, he had to give up progressively more computing power.

Erythrina was gone, gone as though she had never been. Or was she? He gave a sliver of his attention to a search, a sliver that was still many times more powerful than any mere warlock. That tiny piece of consciousness quickly noticed a power failure in southern Rhode Island. Many power failures had developed during the last few minutes, consequent to the data failure. But this one was strange. In addition to power, comm lines were down and even his intervention could not bring them to life. It was about as thoroughly blacked out as a place could be. This could scarcely be an accident.

… and there was a voice, barely telephone quality and almost lost in the mass of other data he was processing. Erythrina! She had, via some incredibly tortuous detour, retained a communication path to the outside.

His gaze swept the blacked-out Providence suburb. It consisted of new urbapts, perhaps one hundred thousand units in all. Somewhere in there lived the human that was Erythrina. While she had been concentrating on DON.MAC, he must have been working equally hard to find her True Name. Even now, DON did not know precisely who she was, only enough to black out the area she lived in.

It was getting hard to think; DON.MAC was systematically dismantling him. The lethal intent was clear: as soon as Mr. Slippery was sufficiently reduced, the Orbital Lasers would be turned on his body, and then on Erythrina's. And then the Mailman's faithful servant would have a planetary kingdom to turn over to his mysterious master.

He listened to the tiny voice that still leaked out of Providence. It didn't make too much sense. She sounded hysterical, panicked. He was surprised that she could speak at all; she had just suffered — in losing all her computer connections — something roughly analogous to a massive stroke. To her, the world was now seen through a keyhole, incomplete, unknown and dark.

"There is a chance; we still have a chance," the voice went on, hurried and slurred. "An old military communication tower north of here. Damn. I don't know the number or grid, but I can see it from where I'm sitting. With it you could punch through to the roof antenna … has plenty of bandwidth, and I've got some battery power here… but hurry ."

She didn't have to tell him that; he was the guy who was being eaten alive. He was almost immobilized now, the other's attack squeezing and stifling where it could not cut and tear. He spasmed against DON's strength and briefly contacted the comm towers north of Providence. Only one of them was in line of sight with the blacked-out area. Its steerable antenna was very, very narrow beam.

"Ery, I'm going to need your house number, maybe even your antenna id."

A second passed, two — a hellish eon for Mr. Slippery. In effect, he had asked her for her True Name — he who was already known to the Feds. Once he returned to the real world, there would be no way he could mask this information from them. He could imagine her thoughts: never again to be free. In her place, he would have paused too, but — "Ery! It's the True Death for both of us if you don't. He's got me!"

This time she barely hesitated. "D-Debby Charteris, 4448 Grosvenor Row. Cut off like this, I don't know the antenna id. Is my name and house enough?"

"Yes. Get ready!"

Even before he spoke, he had already matched the name with an antenna rental and aligned the military antenna on it. Return contact came as he turned his attention back to DON.MAC. With luck, the enemy was not aware of their conversation. Now he must be distracted.