There weren't very many Controllers on Earth, percentagewise. Of the three and a half billion people on Earth, less than an estimated one-thousandth of one percent were telepathic. But that made a grand total of some thirty-five thousand people.

Spread, as they were, all over the planet, it was rare that one Controller ever met another. The intelligent ones didn't use their power; they remained concealed, even from each other.

But _someone_, somewhere, was finding them and betraying them to the Psychodeviant Police.

As more and more data came in on the La.s.ser case, Houston began to get an idea. If there were a really clever, highly intelligent, megalomaniac Controller, wouldn't it be part of his psychological pattern to attempt to get rid of the majority of Controllers, those who simply wanted to lead normal lives?

And, if so, wasn't it possible that both his cases--the official and the unofficial--might lead to the same place: La.s.ser & Sons?

It began to look as though Houston could kill both his birds at once, if he could just figure out when, how, and in what direction to throw the stone.

In the middle of the seventh week, a Controller in Manchester, England, was mobbed and torn to bits by an irate crowd before the PD Police could get to him. There was no doubt in Houston's mind that this one was a real megalomaniac; he had taken over another man's brain and forced him to commit suicide. The controlled man had taken a Webley automatic, put it to his temple, and blown his brains out.

The Controller's mistake was in not realizing what the sudden shock of that bullet, transmitted to him telepathically, could do to his own mind. In the mental disorder that followed, he was spotted and killed easily.

There was still no word from Dorrine. She had flown back to the States a week after Houston had returned, but she had had to get back to England after three days. Since then, he had had three letters, nothing more.

And letters are a d.a.m.ned unsatisfactory way for a telepath to conduct a love affair.

The one other factor that entered in was The Group, the small band of sane, reasonable telepaths who had begun to build themselves into an organization--a sort of Mutual Protective a.s.sociation.

Personally, Houston didn't think much of the idea; the Group didn't have any real organization, and they refused to put one together. It was supposed to be democratic, but it sometimes bordered on the anarchic.

He stayed with them more for companionship than any other reason. When Dorrine had come back for her short stay, Houston had met with them and tried to get them to help him trace down the megalomaniac Controller who was doing so much damage, but they'd balked at the idea. Their job, they claimed, was to get enough members so that they could protect themselves from arrest by the Normals, and then just let things ride.

"After all," Dorrine had said, "things will work themselves out, darling; they always do."

"Not unless somebody helps them, they don't," Houston had snapped back.

"Someone has to do something."

"But, Dave, darling--we _are_ doing something! Don't you see?"

He didn't, but there was no convincing either the Group or Dorrine. She was pa.s.sionately interested in the recruiting work she was doing, and she thought that the Group was the answer to every Controller's troubles.

And then she had rushed back to England. "I'll be back soon, Dave,"

she'd said. "I think I have a lead on a girl in Liverpool."

So far, the girl hadn't been found. Controllers didn't like to give themselves away to anyone, so they kept a tight screen up most of the time.

It seemed as though everyone on Earth was in deadly fear all the time.

The Normals feared losing their ident.i.ties to Controllers, and the Controllers feared death at the hands of the Normals.

And death or the Penal Cl.u.s.ter were their only choices if they were discovered.

Houston worried about the risks Dorrine was taking, but there was nothing he could do. She was doing what she thought was right, just as he was; how could he argue with that?

Houston went on with his job, putting together facts and rumors and statistical data a.n.a.lysis, searching out his quarry.

And, at the end of the eighth week, everything blew high, wide, and h.e.l.lish.

It was late evening. A cool wind blew over New York, bringing with it a hint of the rain to come. Church Street, in lower Manhattan, was not crowded, as it had been in the late afternoon, but neither was it entirely deserted. The cafes and bars did a lively business, but the tall, many-colored office buildings gaped at the street with blind and darkened eyes. Only a few of the windows glowed whitely with fluorescent illumination.

In one of the small coffee shops, David Houston sat, smoking a cigarette and stirring idly at a cup of cooling coffee.

Across the street was the La.s.ser Building; high up on the sixtieth floor, a whole suite of offices was brightly lit. The rest of the building was clothed in blackness.

Who was up there in that suite? Houston wasn't quite sure. He had narrowed his list of suspects down to three men: John Sager, Loris Pederson, and Norcross La.s.ser, three top officials in the company. Sager and Pederson were both vice-presidents of the firm; Sager was in charge of the Foreign Exports department, while Pederson handled the actual shipping. La.s.ser, by virtue of being the grandson of the man who had founded the firm, was president of La.s.ser & Sons, Inc.

La.s.ser seemed like a poor choice as chief villain of the outfit; he was a mild, bland man, quiet and friendly. Besides, his position made him an obvious suspect; naturally, the majority stockholder of the firm would profit most by the increased power of the company. And, equally obviously, a Controller wouldn't want to put himself in such an exposed position.

Which made La.s.ser, in Houston's mind, a h.e.l.l of a good suspect. If anything happened, La.s.ser could cover by claiming that he, too, had been controlled, and the chances were that he could get away with it. A Controller never did anything directly; their dirty work was done by someone else--a puppet under their mental control. At least, so ran the popular misconception. If La.s.ser were the man, he stood a good chance of getting away with it, even if he were caught, provided he played his cards right.

That reasoning still didn't eliminate Sager or Pederson. Either of them could be the Controller. And there still remained the possibility that some unknown, unsuspected fourth person had the company of La.s.ser & Sons under his thumb.

That was what Houston intended to find out tonight.

He took a sip of his coffee, found it still reasonably hot.

d.a.m.n the megalomaniacs, anyway! Houston subconsciously tightened his fists. He, personally, had more to fear from the Normals than from another Controller. Normals could kill or imprison him, while a Controller would have a hard time doing either, directly.

But Houston could understand the Normal man; he could see how fear of a Controller could drive a man without the ability into a frenzied panic.

He could understand, even forgive their actions, born and bred in ignorance and fear.

No, the ones he hated were the ones who had conceived and fostered that fear--the psychologically unstable megalomaniac Controllers. There were only a handful of them--probably not more than a few hundred or a thousand. But because of them, every telepath on Earth found his life in danger, and every Normal found his life a h.e.l.l of terror.

Let Dorrine and her do-nothing friends run around the globe recruiting members for their precious Group; that was all right for them.

Meanwhile, David Houston would be doing something on a more basic action level.

He glanced at his watch. Almost time.

"How's the deployment?" he whispered in his throat.

"We've got the building surrounded now," said the voice in his ear. "You can go in anytime."

"How about the roof?"

"That's taken care of, sir; we've got 'copter that can be on the top of the La.s.ser Building at any time you call. They can land within thirty seconds of your signal."

"Okay," Houston said; "I'm going in now. Remember--no matter what I say or do, no one is to leave that building if they're conscious. And keep your eyes on me; if I act in the least peculiar, handcuff me--but don't knock me out.

"And if I'm not back on time, come in anyway."

"Right."