She nodded again. At that point I almost gave up. I'd been around this circle so many times in the past half-year that I knew how the back of my head looked. Always, the same old question.

#_Cherchez le angle_,# I thought in b.u.m French. Something I had was important enough to both sides to make them keep me on the loose instead of erasing me and my nuisance value. So far as I could see, I was as useless to either side as a coat of protective paint laid on stainless steel. I was immune to Mekstrom's Disease; the immunity of one who has had everything tried on him that scholars of the disease could devise.

About the only thing that ever took place was the sudden disappearance of everybody that I came in contact with.

Marian touched my arm gently. "You mustn't think like that, Steve," she said gently. "You've done enough useless self-condemnation. Can't you stop accusing yourself of some evil factor? Something that really is not so?"

"Not until I know the truth," I replied. "I certainly can't dig it; I'm no telepath. Perhaps if I were, I'd not be in this awkward position."

Again her silence proved to me that I'd hit a touchy spot. "What am I?"

I demanded sourly. "Am I a great big curse? What have I done, other than to be present just before several people turn up missing? Makes me sort of a male Typhoid Mary, doesn't it?"

"Now, Steve--"

"Well, maybe that's the way I feel. Everything I put my great big clutching hands on turns dark green and starts to rot. Regardless of which side they're on, it goes one, two, three, four; Catherine, Thornd.y.k.e, You, Nurse Farrow."

"Steve, what on Earth are you talking about?"

I smiled down at her in a crooked sort of quirk. "You, of course, have not the faintest idea of what I'm thinking."

"Oh, Steve--"

"And then again maybe you're doing your best to lead my puzzled little mind away from what you consider a dangerous subject?"

"I'd hardly do that--"

"Sure you would. I'd do it if our positions were reversed. I don't think it un-admirable to defend one's own personal stand, Marian. But you'll not divert me this time. I have a hunch that I am a sort of male Typhoid Mary. Let's call me old Mekstrom Steve. The carrier of Mekstrom's Disease, who can innocently or maliciously go around handing it out to anybody that I contact. Is that it, Marian?"

"It's probably excellent logic, Steve. But it isn't true."

I eyed her coldly. "How can I possibly believe you?"

"That's the trouble," she said with a plaintive cry. "You can't. You've got to believe me on faith, Steve."

I smiled crookedly. "Marian," I said, "That's just the right angle to take. Since I cannot read your mind, I must accept the old appeal to the emotions. I must tell myself that Marian Harrison just simply could not lie to me for many reasons, among which is that people do not lie to blind men nor cause the cripple any hurt. Well, phooey. Whatever kind of gambit is being played here, it is bigger than any of its parts or pieces. I'm something between a queen and a p.a.w.n, Marian; a piece that can be sacrificed at any time to further the progress of the game.

Slipping me a lie or two to cause me to move in some desired direction should come as a natural."

"But why would we lie to you?" she asked, and then she bit her lip; I think that she slipped, that she hadn't intended to urge me into deeper consideration of the problem lest I succeed in making a sharp a.n.a.lysis.

After all, the way to keep people from figuring things out is to stop them from thinking about the subject. That's the first rule. Next comes the process of feeding them false information if the First Law cannot be invoked.

"Why would you lie to me?" I replied in a sort of sneer. I didn't really want to sneer but it came naturally. "In an earlier age it might not be necessary."

"What?" she asked in surprise.

"Might not be necessary," I said. "Let's a.s.sume that we are living in the mid-Fifties, before Rhine. Steve Cornell turns up being a carrier of a disease that is really a blessing instead of a curse. In such a time, Marian, either side could sign me up openly as a sort of missionary; I could go around the country inoculating the right people, those citizens who have the right kind of mind, att.i.tude, or whatever-factor. Following me could be a clean-up corps to collect the wights who'd been inoculated by my contact. Sounds reasonable, doesn't it?" Without waiting for either protest or that downcast look of agreement, I went on: "But now we have perception and telepathy all over the place. So Steve Cornell, the carrier, must be pushed around from pillar to post, meeting people and inoculating them without ever knowing what he is doing. Because once he knows what he is doing, his usefulness is ended in this world of Rhine Inst.i.tute."

"Steve--" she started, but I interrupted again.

"About all I have to do now is to walk down any main street radiating my suspicions," I said bitterly. "And it's off to Medical Center for Steve--unless the Highways catch me first."

Very quietly, Marian said, "We really dislike to use reorientation on people. It changes them so--"

"But that's what I'm headed for, isn't it?" I demanded flatly.

"I'm sorry, Steve."

Angrily I went on, not caring that I'd finally caught on and by doing so had sealed my own package. "So after I have my mind ironed out smoothly, I'll still go on and on from pillar to post providing newly inoculated Mekstroms for your follow-up squad."

She looked up at me and there were tears in her eyes. "We were all hoping--" she started.

"Were you?" I asked roughly. "Were you all working to innoculate me at Homestead, or were you really studying me to find out what made me a carrier instead of a victim?"

"Both, Steve," she said, and there was a ring of honesty in her tone. I had to believe her, it made sense.

"Dismal prospect, isn't it?" I asked. "For a guy that's done nothing wrong."

"We're all sorry."

"Look," I said with a sudden thought, "Why can't I still go on? I could start a way station of some sort, on some pretext, and go on innoculating the public as they come past. Then I could go on working for you and still keep my right mind."

She shook her head. "Scholar Phelps knows," she said. "Above all things we must keep you out of his hands. He'd use you for his own purpose."

I grunted sourly. "He has already and he will again," I told her. "Not only that, but Phelps has had plenty of chance to collect me on or off the hook. So what you fear does not make sense."

"It does now," she told me seriously. "So long as you did not suspect your own part in the picture, you could do more good for Phelps by running free. Now you know and Phelps' careful herding of your motions won't work."

"Don't get it."

"Watch," she said with a shrug. "They'll try. I don't dare experiment, Steve, or I'd leave you right now. You'd find out very shortly that you're with me because I got here first."

"And knowing the score makes me also dangerous to your Highways? Likely to bring 'em out of Hiding?"

"Yes."

"So now that I've dumped over the old apple cart, I can a.s.sume that you're here to take me in."

"What else can I do, Steve?" she said unhappily.

I couldn't answer that. I just sat there looking at her and trying to remember that her shapely one hundred and eighteen pounds were steel hard and monster strong and that she could probably carry me under one arm all the way to Homestead without breathing hard. I couldn't cut and run; she could outrun me. I couldn't slug her on the jaw and get away; I'd break my hand. The Bonanza .375 would probably stun her, but I have not the cold blooded viciousness to pull a gun on a woman and drill her.

I grunted sourly, that weapon had been about as useful to me as a stuffed bear or an authentic Egyptian Obelisk.

"Well, I'm not going," I said stubbornly.

She looked at me in surprise. "What are you going to do?" she asked me.

I felt a glow of self-confidence. If I could not run loose with guilty knowledge of my being a Mekstrom Carrier, it was equally impossible for anybody to kidnap me and carry me across the country. I'd radiate like mad; I'd complain about the situation at every crossroad, at every filling station, before every farmer. I'd complain mentally and bitterly, and sooner or later someone would get suspicious.

"Don't think like an idiot," she told me sharply. "You drove across the country before, remember? How many people did you convince?"

"I wasn't trying, then--"