The room was almost bare; there seemed to be nothing suited to my purpose. I could use clothing from the "doctor" or his helper, but I did not want to touch them. Then I noticed the dust cover for the acuity tester lying on the bench. I loosened my shirt, snatched up the dust cover, wadded it up, and stuffed it under my shirt between my shoulder blades. With my shirt collar fastened and my jacket zipped tightly it made a bulge of the proper size.

Then I went out, "-a stranger and afraid, into a world I never made."

As a matter of fact I was feeling pretty cocky.

Another cop took my car check. He glanced sharply at me, then motioned me to climb in. I did so and he said, "Go to police headquarters, under the City Hall."

" 'Police headquarters, the City Hall'," I repeated and gunned her ahead. I started in that direction and turned onto Nichols Freeway. I came to a stretch where traffic thinned out and punched the button to shift license plates, hoping that no one would notice. It seemed possible that there was already a call out for the plates I had been showing at the toll gate. I wished that I had been able to change the car's colors and body lines as well.

Before the freeway reached Magee Traffic Way, I turned into a down ramp and stuck thereafter to residential side streets. It was eighteen hundred, zone six time, and I was due in Washington in four and one-half hours.

The city did not look right. I tried to discount my own keyed-up state and to see what was actually there-not what I expected to see nor what I was expected to see. Superficially there was nothing wrong, but it did not have the right flavor, as if it were a clumsily directed play. I kept trying to put my finger on it; it kept slipping away.

Kansas City has many wide neighborhoods made up of family units a century old or more. Time seems to have passed them by; kids roll on lawns and householders sit in the cool of the evening on their front porches, just as their great-grandparents did. If there are bomb shelters around, they do not show. The queer, old, bulky houses, fitted together piece by piece by guildsmen long since dead, have homely charm. Seeing them, one wonders how Kansas City got its gamy reputation; those old neighborhoods feel like an enclave of security, impregnable, untouchable.

I cruised through, dodging dogs and rubber balls and toddlers who chased after each, and tried to get the feel of the place. It was the slack of the day, time for the first drink, for watering lawns, and for neighborly chatting.

And so it seemed. Ahead of me I saw a woman bending over a flower bed. She was wearing a sun suit and her back was bare as mine-more so, for I had that wad of cloth stuffed under my jacket. But clearly she was not wearing a master, nor were the two young kids with her. So what could be wrong?

It was a hot day, hotter even than Washington had been; I began to look for bare shoulders, sun-suited women and men in shorts and sandals. Kansas City, despite its reputation, is in the Bible Belt and feels its puritanical influence. People there do not strip to the weather with the cheerful unanimity of Laguna Beach or Coral Gables. An adult fully covered up is never conspicuous, even on the hottest day.

So I found people dressed both ways-but the proportions were wrong. Sure, there were plenty of kids dressed for the weather, but in several miles of driving I saw the bare backs of only five adult women and two adult men.

I should have seen more like five hundred. It was a hot day.

Cipher it out. While some jackets undoubtedly did not cover masters, by simple proportion well over ninety percent of the population must be possessed.

This city was not "secured" the way we had secured New Brooklyn; this city was saturated. The masters did not simply hold key points and key officials; the masters were the city.

I felt a panicky urge to blast off right from the street and streak out of Zone Red at emergency maximum. They knew that I had escaped the toll gate trap; they would be looking for me. I might be the only free man driving a car in the entire city-and they were all around me!

I fought it down. An agent who gets the wind up is no use to himself or his boss and is not likely to get out of a tight spot. But I had not fully recovered from what it had done to me to be possessed; it was hard to be calm.

I counted ten, delayed my reactions, and tried to figure the situation. It seemed that I must be wrong; there could not possibly be enough masters available to permit them to saturate a city with a million population. I remembered my own experiences hardly two weeks earlier; I recalled how we picked our recruits and made each new host count. Of course that had been a secondary invasion in which we had depended on shipments, whereas Kansas City almost certainly had had a flying saucer land nearby.

Still it did not make sense; it would have taken, I felt sure, not one saucer but a dozen or more, to carry enough masters to saturate Kansas City. If there had been that many surely the space stations would have spotted them, radar-tracked their landing orbits.

Or could it be that they had no trajectories to track? That they simply appeared instead of swooping down like a rocket? Maybe they used that hypothetical old favorite, the "space-time warp"? I did not know what a space-time warp was and I doubted if anyone knew, but it would do to tag a type of landing which could not be spotted by radar. We did not know what the masters were capable of in the way of engineering and it was not safe to judge their limitations by our own.

But the data I had led to a conclusion which contradicted common logic; therefore I must check before I reported back. One thing seemed sure: if I assumed that the masters had in fact almost saturated this city, then it was evident that they were still keeping up the masquerade. For the time being they were permitting the city to look like a city of free human beings. Perhaps I was not as conspicuous as I feared.

While I was thinking I had moseyed along another mile or so, going nowhere. Once I found myself heading into the retail district around the Plaza; I swung away; where there are crowds, there are cops. But I skimmed the edge of the district and in so doing passed a public swimming pool. I observed it and filed what I had seen. My mind works by delays and priorities; an item having a low priority is held until the circuits are cleared and ready for it.

To put it bluntly, I am subject to doubletakes.

I was several blocks away before I reviewed the swimming pool datum; it had not been much: the gates were locked and it carried a sign-"CLOSED FOR THE SEASON".

A swimming pool closed down during the hottest part of the summer? What did it mean? Nothing at all; swimming pools have gone out of business before and will again. On the other hand it was contrary to the logic of economics to close such an enterprise during the season of greatest profit except through utter necessity. The odds against it were long.

But a swimming pool was the one place where the masquerade could not possibly be maintained. From the viewpoint of humans a closed pool was less conspicuous than a pool unpatronized in hot weather. And I knew that the masters noted and followed the human point of view in their maneuvers-shucks, I had been there!

Item: a trap at the city's toll gates; item: too few sun suits; item: a closed swimming pool.

Conclusion: the slugs were incredibly more numerous than had been dreamed by anyone-including myself who had been possessed by them.

Corollary: Schedule Counter Blast was based on a mistaken estimate of the enemy and would work as well as hunting rhinoceri with a slingshot.