I came to, to find my hands tied and my ankles as well. I was in the second driver's seat of the car and the Old Man was in the other, at the controls. The wheel on my side was latched up out of the way. The sudden realization that the car was in the air brought me fully awake.

He turned and said cheerfully, "Feeling better?" I could see his slug, riding high on his shoulders.

"Some better," I admitted.

"Sorry I had to hit you," he went on, "but there was no other way."

"I suppose not."

"I'll have to leave you tied up for the present; you know that. Later on we can make better arrangements." He grinned, his old wicked grin. Most amazingly his own personality came through with every word the slug said.

I did not ask what "better arrangements" were possible; I did not need nor want to know. I concentrated on checking my bonds; I need not have bothered-the Old Man had given them his personal attention.

"Where are we going?" I asked.

"South." He fiddled with the controls. "'Way south. Just give me a moment to lay this heap in the groove and I will explain what's in store for us." He was busy for a few seconds, then said, "There-that will hold her until she levels off at thirty thousand."

The mention of that much altitude caused me to take a quick look at the control board. The duo did not merely look like one of the Section's cars; it actually was one of our souped-up jobs. "Where did you get this car?" I asked.

"The Section had it cached in Jefferson City. I looked, and, sure enough, nobody had found it. Fortunate, wasn't it?"

There could be a second opinion on that point, I thought, but I did not argue. I was still checking the possibilities-and finding them somewhere between slim and hopeless. My own gun was gone, as I could tell by the pressure. He was probably carrying his on the side away from me; it was not in sight.

"But that was not the best of it," he went on; "I had the good luck to be captured by what was almost certainly the only healthy master in the whole of Jefferson City-not that I believe in luck. So we win after all." He chuckled. "It's like playing both sides of a very difficult chess game."

"You did not tell me where we are going?" I persisted. I did not know that it would help, but I was getting nowhere fast and talking was the only action open to me.

He considered. "Out of the United States, certainly. My master may be the only one free of nine-day fever in the whole continent and I don't dare take a chance. I think the Yucatan peninsula would suit us-that's where I've got her pointed. We can hole up there and increase our numbers and work on south. When we do come back-and we will! -we won't make the same mistakes."

I said, "Dad, can't you take these ties off me? I'm losing circulation. You know you can trust me."

"Presently, presently-all in good time. Wait until we go full automatic." The car was still climbing; souped up or not, thirty thousand was a long pull for a car that had started out as a family model.

I said, "You seem to forget that I was with the masters a long time. I know the score-and I give you my word of honor."

He grinned. "Don't teach grandma how to steal sheep. If I let you loose now, you'll kill me or I'll have to kill you. And I want you alive. We're going places, son-you and me. We're fast and we're smart and we are just what the doctor ordered."

I did not have an answer. He went on, "Just the same-about you knowing the score: why didn't you tell me the score, son? Why did you hold out on me?"

"Huh?"

"You didn't tell me how it felt. Son, I had no idea that a man could feel such a sense of peace and contentment and well-being. This is the happiest I've been in years, the happiest since-" he suddenly looked puzzled, and then went on, "since your mother died. But never mind that; this is better. You should have told me."

Disgust suddenly poured over me and I forgot the cautious game I was playing. "Maybe I didn't see it that way. And neither would you, you crazy old fool, if you didn't have a filthy slug riding you, talking through your mouth, thinking with your brain!"

"Take it easy, son," he said gently-and so help me, his voice did soothe me. "You'll know better in a little while. Believe me, this is what we were intended for, this is our destiny. Mankind has been divided, warring with himself. The masters will make him whole again."

I thought to myself that there were probably custard heads just screwy enough to fall for such a line-surrender their souls willingly for a promise of security and peace. But I did not say so; I was clamping my jaws to keep from throwing up.

"But you need not wait much longer," he said suddenly, glancing at the board. "I'll nail her down in the groove." He adjusted his dead-reckoner bug, checked his board, and set his controls. "That's a relief. Next stop: Yucatan. Now to work." He got out of his chair and knelt beside me in the crowded space. "Got to be safe," he said, as he strapped the safety belt across my middle.

I brought my knees up in his face.

He reared up and looked at me without anger. "Naughty, naughty. I could resent that-but the masters don't go in for resentment. Now be good." He went ahead, checking my wrists and feet. His nose was bleeding but he did not bother to wipe it. "You'll do," he said. "Now be patient; it won't be long."

He went back to the other control seat, sat down and leaned forward, elbows on knees. It brought his master directly into my view.

Nothing happened for some minutes, nor could I think of anything to do other than strain at my bonds. By his appearance, the Old Man was asleep, but I placed no trust in that.

A line formed straight down the middle of the horny brown covering of the slug.

As I watched it, it widened. Presently I could see the clotted opalescent horror underneath. The space between the two halves of the shell widened-and I realized that the slug was fissioning, sucking life and matter out of the body of my father to make two of itself.

I realized, too, with rigid terror, that I had no more than five minutes of individual life left to me. My new master was being born and soon would be ready to mount me.

Had it been humanly possible for flesh and bone to break the ties on me I would have broken them. I did not succeed. The Old Man paid no attention to my struggles. I doubt if he were conscious; the slugs must surely give up some measure of control while they are occupied with splitting. It must be that they simply immobilize the slave. As may be-the Old Man did not move.

By the time I had given up, worn out and sure that I could not break loose, I could see the ciliated silvery line down the center of the slug proper which means that fission is about to be complete. It was that which changed my line of reasoning, if there were reason left in my churning skull.

My hands were tied behind me, my ankles were tied, and I was belted tight across the middle to the chair. But my legs, even though fastened together, were free from my waist down; the seat had no knee belts.

I slumped down in the chair to get even more reach and swung my legs up high. I brought them down smashingly across the board-and set off every launching unit in her racks at once.

That adds up to a lot of g's-how many, I don't know, for I don't know how full her racks were. But there were plenty. We were both slammed back against the seats. Dad much harder than I was, since I was strapped down. He was thrown against the back of his seat, with his slug, open and helpless, crushed between the two masses.

It splashed.

And Dad himself was caught in that terrible, total reflex, that spasm of every muscle that I had seen three times before. He bounced forward against the wheel, face contorted, fingers writhing.