Garwood opened his mouth to deny it... but even as he did so he knew it would be useless. "Yes," he signed. "And you?"

"Major Alan Davidson; Combined Services Intelligence. They miss you back at your lab, Doctor."

Garwood glanced past the husky man holding his right arm, saw the line of pa.s.sengers goggling at him.

"So it was all a set-up?" he asked. "The bus is okay?"

Davidson nodded. "A suspicious clerk in Springfield thought you might be a fugitive. From your description and something about a broken ashtray my superiors thought it might be you. Come with me, please."

Garwood didn't have much choice. Propelled gently along by the hands still holding his arms, he followed Davidson toward the lighted building and a long car parked in the shadows there. "Where are you taking me?" he asked, trying to keep his voice steady.

Davidson reached the car and opened the back door; and it wasn't until he and Garwood were in the back seat and the other two soldiers in front that the major answered the question. "Chanute AFB, about fifteen miles north of Champaign," he told Garwood as the car pulled back onto the interstate and headed east. "We'll be transferring you to a special plane there for the trip back to the Project."Garwood licked his lips. A plane. How many people, he wondered, wished that mankind had never learned to fly? There was only one way to know for sure... and that way might wind up killing him. "You put me on that plane and it could be the last anyone ever sees of me," he told Davidson.

"Really?" the major asked politely.

"Did they tell you why I ran out on the Project? That the place was falling down around my ears?"

"They mentioned something about that, yes," Davidson nodded. "I really don't think you have anything to worry about, though. The people in charge of security on this one are all top notch."

Garwood snorted. "You're missing the point, Major. The lab wasn't under any kind of attack from outside agents. It was falling apart because I was in it."

Davidson nodded. "And as I said, we're going to have you under complete protection*"

"No!" Garwood snapped. "I'm not talking about someone out there gunning for me or the Project. It's my presence there*my physical presence inside Backdrop*that was causing all the destruction."

Davidson's dimly visible expression didn't change. "How do you figure that?"

Garwood hesitated, glancing at the front seat and the two silhouettes there listening into the conversation.

Major Davidson might possibly be cleared for something this sensitive; the others almost certainly weren't. "I can't tell you the details," he said, turning back to Davidson. "I*look, you said your superiors nailed me because of a broken ashtray in Springfield, right? Did they tell you anything more?"

Davidson hesitated, then shook his head. "No."

"It broke because I came too close to it," Garwood told him. "There's a*oh, an aura, I guess you could call it, of destruction surrounding me. Certain types of items are especially susceptible, including internal combustion engines. That's why I don't want to be put on any plane."

"Uh-huh," Davidson nodded. "West, you having any trouble with the car?"

"No, sir," the driver said promptly. "Running real smooth."

Garwood took a deep breath. "It doesn't always happen right away," he said through clenched teeth. "I rode the bus for over an hour without anything happening, remember? But if it does happen with a plane, we can't just pull off the road and stop."

Davidson sighed. "Look, Dr. Garwood, just relax, okay? Trust me, the plane will run just fine."

Garwood glared through the gloom at him. "You want some proof?*is that what it'll take? Fine.

Do you have any cigarettes?"

For a moment Davidson regarded him in silence. Then, flicking on a dim overhead dome light, he dug a crumpled pack from his pocket.

"Put a couple in my hand," Garwood instructed him, extending a palm, "and leave the light on."

Davidson complied with the cautious air of a man at a magic show. "Now what?"

"Just keep an eye on them. Tell me, do you like smoking?"The other snorted. "h.e.l.l, no. Tried to give the d.a.m.n things up at least twenty times. I'm hooked pretty good, I guess."

"You like being hooked?"

"That's a stupid question."

Garwood nodded. "Sorry. So, now... how many other people, do you suppose, hate being hooked by tobacco?"

Davidson gave him a look that was half frown, half glare. "What's your point, Doctor?"

Garwood hesitated. "Consider it as a sort of subconscious democracy. You don't like smoking, and a whole lot of other people in this country don't like smoking. A lot of them wish there weren't any cigarettes*wish these cigarettes didn't exist."

"And if wishes were horses, beggars would ride," Davidson quoted. He reached over, to close his fingers on the cigarettes in Garwood's palmAnd jerked his hand back as they crumpled into shreds at his touch.

"What the h.e.l.l?" he snapped, practically in Garwood's ear. "What did you do?"

"I was near them," Garwood said simply. "I was near them, and a lot of people don't like smoking. That's all there is to it."

Davidson was still staring at the mess in Garwood's palm. "It's a trick. You switched cigarettes on me."

"While you watched?" Garwood snorted. "All right, fine, let's do it again. You can write your initials on them this time."

Slowly, Davidson raised his eyes to Garwood's face. "Why you?"

Garwood brushed the bits of paper and tobacco off his hand with a shudder. Even after all these months it still scared him spitless to watch something disintegrate like that. "I know... something. I can't tell you just what."

"Okay, you know something. And?"

"No ands about it. It's the knowledge alone that does it."

Davidson's eyes were steady on his face. "Knowledge. Knowledge that shreds cigarettes all by itself."

"That, combined with the way a lot of people feel about smoking. Look, I know it's hard to believe*"

"Skip that point for now," Davidson cut him off. "a.s.sume you're right, that it's pure knowledge that somehow does all this. Is it something connected with the Backdrop Project?"

"Yes."

"They know about it? And know what it does?"

"Yes, to both."

"And they still want you back?"Garwood thought about Saunders. The long discussions he'd had with the other. The even longer arguments. "Dr. Saunders doesn't really understand."

For a moment Davidson was silent. "What else does this aura affect besides cigarettes?" he asked at last.

"You mentioned car engines?"

"Engines, plastics, televisions*modern conveniences of all kinds, mainly, though there are other things in danger as well. Literally anything that someone doesn't like can be a target." He thought about the bus and Tom Benedict Arnold. "It might work on people, too," he added, shivering. "That one I haven't had to find out about for sure."

"And all that this... destructive wishing... needs to come out is for you to be there?"

Garwood licked his lips. "So far, yes. But if Backdrop ever finishes its work*"

"In other words, you're a walking time bomb."

Garwood winced at the harshness in Davidson's voice. "I suppose you could put it that way, yes. That's why I didn't want to risk staying at Backdrop. Why I don't want to risk riding in that plane."

The major nodded. "The second part we can do something about, anyway. We'll sc.r.a.p the plane and keep you on the ground. You want to tell us where this Backdrop Project is, or would you rather I get the directions through channels?"

Garwood felt a trickle of sweat run between his shoulderblades. "Major, I can't go back there. I'm one man, and it's bad enough that I can wreck things the way I do. But if Backdrop finishes its work, the effect will spread a million-fold."

Davidson eyed his warily. "You mean it's contagious? Like a virus or something?"

"Well... not exactly."

"Not exactly," Davidson repeated with a snort. "All right, then, try this one: do the people at Backdrop know what it is about you that does this?"

"To some extent," Garwood admitted. "But as I said, they don't grasp all the implications*"

"Then you'd agree that there's no place better equipped to deal with you than Backdrop?"

Garwood took a deep breath. "Major... I can't go back to Backdrop. Either the project will disintegrate around me and someone will get killed... or else it'll succeed and what happened to your cigarettes will start happening all over the world. Can't you understand that?"

"What I understand isn't the issue here, Doctor," Davidson growled. "My orders were very specific: to deliver you to Chanute AFB and from there to Backdrop. You've convinced me you're dangerous; you haven't convinced me it would be safer to keep you anywhere else."

"Major*"

"And you can d.a.m.n well shut up now, too." He turned his face toward the front of the car.

Garwood took a shuddering breath, let it out in a sigh of defeat as he slumped back into the cushions. It had been a waste of time and energy*he'd known it would be right from the start. Even if he could have told Davidson everything, it wouldn't have made any difference. Davidson was part of the "not-me" generation, and he had his orders, and all the logic and reason in the world wouldn't havemoved him into taking such a chance.

And now it was over... because logic and reason were the only weapons Garwood had.

Unless...

He licked his lips. Maybe he did have one other weapon. Closing his eyes, he began to concentrate on his formulae.

Contrary to what he'd told Saunders, there were only four truly fundamental equations, plus a handful of others needed to define the various quant.i.ties. One of the equations was given in the notes he hadn't been able to destroy; the other three were still exclusively his. Squeezing his eyelids tightly together, he listened to the hum of the car's engine and tried to visualize the equations exactly as they'd looked in his notebook...

But it was no use, and ten minutes later he finally admitted defeat. The engine hadn't even misfired, let alone failed. The first time the curse might actually have been useful, and he was apparently too far away for it to take effect. Too far away, and no way to get closer without crawling into the front seat with the soldiers.

The soldiers...

He opened his eyes. Davidson was watching his narrowly; ahead, through the windshield, the lights of a city were throwing a glow onto the low clouds overhead. "Coming up on I-57, Major," the driver said over his shoulder. "You want to take that or the back door to Chanute?"

"Back door," Davidson said, keeping his eyes on Garwood.

"Yessir."

Back door? Garwood licked his lips in a mixture of sudden hope and sudden dread. The only reasonable back door was Route 45 north... and on the way to that exit they would pa.s.s through the northern end of Champaign.

Which meant he had one last chance to escape... and one last chance to let the genie so far out of the bottle that he'd never get it back in.

But he had to risk it. "All right, Major," he said through dry lips, making sure he was loud enough to be heard in the front seat as well. "Chi square e to the minus i alpha t to the three-halves, plus i alpha t to the three-halves e to the gamma zero z. Sum over all momentum states and do a rotation transformation of one point five five six radians. Energy transfer equation: first tensor is*"

"What the h.e.l.l are you talking about?" Davidson snarled. But there was a growing note of uneasiness in his voice.

"You wanted proof that what I know was too dangerous to be given to Saunders and Backdrop?"

Garwood asked. "Fine; here it is. First tensor is p sub xx e to the gamma*"

Davidson swore suddenly and lunged at him. But Garwood was ready for the move and got there first, throwing his arms around the other in an imprisoning bear hug. "*times p sub y alpha e to the minus i alpha t*"

Davidson threw off the grip, aiming a punch for Garwood's stomach. But the bouncing car ruined his aim and Garwood took the blow on his ribs instead. Again he threw his arms around Davidson."*plus four pi sigma chi over gamma one z*"

A hand grabbed at Garwood's hair: the soldier in the front seat, leaning over to a.s.sist in the fray.

Garwood ducked under the hand and kept shouting equations. The lack of s.p.a.ce was on his side, hampering the other two as they tried to subdue him. Dimly, Garwood wondered why the driver hadn't stopped, realized that the car was now slowing down. There was a b.u.mp as they dropped onto the shoulderAnd with a loud staccato crackle from the front, the engine suddenly died.

The driver tried hard, but it was obvious that the car's abrupt failure had taken him completely by surprise. For a handful of wild heartbeats the vehicle careened wildly, dropping down off the shoulder into the ditch and then up the other side. A pair of close-s.p.a.ced trees loomed ahead*the driver managed to steer between them*and an instant later the car slammed to a halt against the rear fence of a used car lot.

Garwood was the first to recover. Yanking on the handle, he threw the door open and scrambled out.

The car had knocked a section of the fence part way over; climbing onto the hood, he gripped the chain links and pulled himself up and over.

He'd made it nearly halfway across the lot when the voice came from far behind him. "Okay, Garwood, that's far enough," Davidson called sharply. "Freeze or I shoot."

Garwood half turned, to see Davidson's silhouette drop over the fence and bring his arms up into a two-handed marksman's stance. Instinctively, Garwood ducked, trying to speed up a little. Ahead of him, the lines of cars lit up with the reflected flash; behind came the crack of an explosionAnd a yelp of pain.

Garwood braked to a halt and turned. Davidson was on the pavement twenty yards back of him, curled onto his side. A few feet in front of him was his gun. Or, rather, what had once been his gun...

Garwood looked around, eyes trying to pierce the shadows outside the fence. Neither of the other soldiers was anywhere in sight. Still in the car, or moving to flank him? Whichever, the best thing he could do right now was to forget Davidson and get moving.

The not-me generation. "d.a.m.n," Garwood muttered to himself. "Davidson?" he called tentatively. "You all right?"

"I'm alive," the other's voice bit back.

"Where did you get hit?"

There was a short pause. "Right calf. Doesn't seem too bad."

"Probably took a chunk of your gun. You shouldn't have tried to shoot me*there are just as many people out there who hate guns as hate smoking." A truck with its brights on swept uncaringly past on the interstate behind Davidson, and Garwood got a glimpse of two figures inside the wrecked car. Moving sluggishly... which took at least a little of the load off Garwood's conscience. At least his little stratagem hadn't gotten anyone killed outright. "Are your men okay?"

"Do you care?" the other shot back.