"My name's Jim Brender," said the thing, conscious of grim amus.e.m.e.nt, conscious, too, that it was progress for it to be able to feel such an emotion.

The real Jim Brender had recovered himself. "Sit down, sit down," he said heartily. "This is the most amazing coincidence I've ever seen."

He went over to the mirror that made one panel of the left wall. He stared, first at himself, then at the creature. "Amazing," he said.

"Absolutely amazing."

"Mr. Brender," said the creature, "I saw your picture in the paper and I thought our astounding resemblance would make you listen, where otherwise you might pay no attention. I have recently returned from Mars, and I am here to persuade you to come back to Mars with me."

"That," said Jim Brender, "is impossible."

"Wait," the creature said, "until I have told you why. Have you ever heard of the Tower of the Beast?"

"The Tower of the Beast!" Jim Brender repeated slowly. He went around his desk and pushed a b.u.t.ton.

A voice from an ornamental box said: "Yes, Mr. Brender?"

"Dave, get me all the data on the Tower of the Beast and the legendary city of Li in which it is supposed to exist."

"Don't need to look it up," came the crisp reply. "Most Martian histories refer to it as the beast that fell from the sky when Mars was young --some terrible warning connected with it--the beast was unconscious when found--said to be the result of its falling out of sub-s.p.a.ce. Martians read its mind; and were so horrified by its subconscious intentions they tried to kill it, but couldn't. So they built a huge vault, about fifteen hundred feet in diameter and a mile high--and the beast, apparently of these dimensions, was locked in.

Several attempts have been made to find the city of Li, but without success. Generally believed to be a myth. That's all, Jim."

"Thank you!" Jim Brender clicked off the connection, and turned to his visitor. "Well?"

"It is not a myth. I know where the Tower of the Beast is; and I also know that the beast is still alive."

"Now, see here," said Brender good-humoredly, "I'm intrigued by your resemblance to me; and as a matter of fact I'd like Pamela--my wife --to see you. How about coming over to dinner? But don't, for Heaven's sake, expect me to believe such a story. The beast, if there is such a thing, fell from the sky when Mars was young. There are some authorities who maintain that the Martian race died out a hundred million years ago, though twenty-five million is the conservative estimate. The only things remaining of their civilization are their constructions of ultimate metal.

Fortunately, toward the end they built almost everything from that indestructible metal."

"Let me tell you about the Tower of the Beast," said the thing quietly.

"It is a tower of gigantic size, but only a hundred feet or so projected above the sand when I saw it. The whole top is a door, and that door is geared to a time lock, which in turn has been integrated along a line of ieis to the ultimate prime number."

Jim Brender stared; and the thing caught his startled thought, the first uncertainty, and the beginning of belief.

"Ultimate prime number!" Brender e.j.a.c.u.l.a.t.ed. "What do you mean?" He caught himself. "I know of course that a prime number is a number divisible only by itself and by one."

He s.n.a.t.c.hed at a book from the little wall library beside his desk, and rippled through it. "The largest known prime is--ah, here it is--is 230584300921393951. Some others, according to this authority, are 77843839397, 182521213001, and 78875943472201.

He frowned. "That makes the whole thing ridiculous. The ultimate prime would be an indefinite number." He smiled at the thing. "If there is a beast, and it is locked up in a vault of ultimate metal, the door of which is geared to a time lock, integrated along a line of ieis to the ultimate prime number--then the beast is caught. Nothing in the world can free it."

"To the contrary," said the creature. "I have been a.s.sured by the beast that it is within the scope of human mathematics to solve the problem, but that what is required is a born mathematical mind, equipped with all the mathematical training that Earth science can afford. You are that man."

"You expect me to release this evil creature--even if I could perform this miracle of mathematics."

"Evil nothing!" snapped the thing. "That ridiculous fear of the unknown which made the Martians imprison it has resulted in a very grave wrong. The beast is a scientist from another s.p.a.ce, accidentally caught in one of his experiments. I say 'his' when of course I do not know whether this race has a s.e.xual differentiation."

"You actually talked with the beast?"

"It communicated with me by mental telepathy."

"It has been proven that thoughts cannot penetrate ultimate metal."

"What do humans know about telepathy? They cannot even communicate with each other except under special conditions." The creature spoke contemptuously.

"That's right. And if your story is true, then this is a matter for the Council."

"This is a matter for two men, you and I. Have you forgotten that the vault of the beast is the central tower of the great city of Li--billions of dollars' worth of treasure in furniture, art and machinery? The beast demands release from its prison before it will permit anyone to mine that treasure You can release it. We can share the treasure."

"Let me ask you a question," said Jim Brender. "What is your real name?"

"P-Pierce Lawrence!" the creature stammered. For the moment, it could think of no greater variation of the name of its first victim than reversing the two words, with a slight change on "Pearson." Its thoughts darkened with confusion as the voice of Brender pounded: "On what ship did you come from Mars?"

"O-on F4961," the thing stammered chaotically, fury adding to the confused state of its mind. It fought for control, felt itself slipping, suddenly felt the pull of the ultimate metal that made up the bas-relief on the wall, and knew by that tug that it was dangerously near dissolution.

"That would be a freighter," said Jim Brender. He pressed a b.u.t.ton.

"Carltons, find out if the F 4961 had a pa.s.senger or person aboard, named Pierce Lawrence. How long will it take?"

"About a minute, sir."

"You see," said Jim Brender, leaning back, "this is mere formality. If you were on that ship, then I shall be compelled to give serious attention to your statements. You can understand, of course, that I could not possibly go into a thing like this blindly. I--" The buzzer rang. "Yes?" said Jim Brender.

"Only the crew of two was on the F4961 when it landed yesterday. No such person as Pierce Lawrence was aboard."

"Thank you." Jim Brender stood up. He said coldly, "Good-by, Mr. Lawrence.

I cannot imagine what you hoped to gain by this ridiculous story.

However, it has been most intriguing, and the problem you presented was very ingenious indeed--" The buzzer was ringing. "What is it?"

"Mr. Gorson to see you, sir."

"Very well, send him right in."

The thing had greater control of its brain now, and it saw in Brender's mind that Gorson was a financial magnate, whose business ranked with the Brender firm. It saw other things, too; things that made it walk out of the private office, out of the building, and wait patiently until Mr. Gorson emerged from the imposing entrance. A few minutes later, there were two Mr. Gorsons walking down the street.

Mr. Gorson was a vigorous man in his early fifties. He had lived a clean, active life; and the hard memories of many climates and several planets were stored away in his brain. The thing caught the alertness of this man on its sensitive elements, and followed him warily, respectfully, not quite decided whether it would act.

It thought: "I've come a long way from the primitive life that couldn't hold its shape. My creators, in designing me, gave to me powers of learning, developing. It is easier to fight dissolution, easier to be human. In handling this man, I must remember that my strength is invincible when properly used."

With minute care, it explored in the mind of its intended victim the exact route of his walk to his office. There was the entrance to a large building clearly etched on his mind. Then a long, marble corridor, into an automatic elevator up to the eighth floor, along a short corridor with two doors. One door led to the private entrance of the man's private office. The other to a storeroom used by the janitor. Gorson had looked into the place on various occasions; and there was in his mind, among other things, the memory of a large chest The thing waited in the storeroom till the unsuspecting Gorson was past the door. The door creaked. Gorson turned, his eyes widening. He didn't have a chance. A fist of solid steel smashed his face to a pulp, knocking the bones back into his brain.

This time, the creature did not make the mistake of keeping its mind tuned to that of its victim. It caught him viciously as he fell, forcing its steel fist back to a semblance of human flesh. With furious speed, it stuffed the bulky and athletic form into the large chest, and clamped the lid down tight.

Alertly, it emerged from the storeroom, entered the private office of Mr. Gorson, and sat down before the gleaming desk of oak. The man who responded to the pressing of a b.u.t.ton saw John Gorson sitting there, and heard John Gorson say: "Crispins, I want you to start selling these stocks through the secret channels right away. Sell until I tell you to stop, even if you think it's crazy. I have information of something big on."

Crispins glanced down the row after row of stock names; and his eyes grew wider and wider. "Good lord, man!" he gasped finally, with that familiarity which is the right of a trusted adviser, "these are all the gilt-edged stocks. Your whole fortune can't swing a deal like this."

"I told you I'm not in this alone."

"But it's against the law to break the market," the man protested.

"Crispins, you heard what I said. I'm leaving the office. Don't try to get in touch with me. I'll call you."

The thing that was John Gorson stood up, paying no attention to the bewildered thoughts that flowed from Crispins. It went out of the door by which it had entered. As it emerged from the building, it was thinking: "All I've got to do is kill half a dozen financial giants, start their stocks selling, and then--" By one o'clock it was over.

The exchange didn't close till three, but at one o'clock, the news was flashed on the New York tickers. In London, where it was getting dark, the papers brought out an extra. In Hankow and Shanghai, a dazzling new day was breaking as the newsboys ran along the streets in the shadows of skysc.r.a.pers, and shouted that J. P. Brender & Co. had a.s.signed; and that there was to be an investigation "We are facing," said the chairman of the investigation committee, in his opening address the following morning, "one of the most astounding coincidences in all history. An ancient and respected firm, with worldwide affiliations and branches, with investments in more than a thousand companies of every description, is struck bankrupt by an unexpected crash in every stock in which the firm was interested. It will require months to take evidence on the responsibility for the short-selling which brought about this disaster. In the meantime, I see no reason, regrettable as the action must be to all the old friends of the late J.

P. Brender, and of his son, why the demands of the creditors should not be met, and the properties liquidated through auction sales and such other methods as may be deemed proper and legal--"

"Really, I don't blame her," said the first woman, as they wandered through the s.p.a.cious rooms of the Brenders' Chinese palace. "I have no doubt she does love Jim Brender, but no one could seriously expect her to remain married to him now. She's a woman of the world, and it's utterly impossible to expect her to live with a man who's going to be a mere pilot or s.p.a.ce hand or something on a Martian s.p.a.ceship--" Commander Hughes of Interplanetary s.p.a.ceways entered the office of his employer truculently. He was a small man, but extremely wiry; and the thing that was Louis Dyer gazed at him tensely, conscious of the force and power of this man.

Hughes began: "You have my report on this Brender case?"

The thing twirled the mustache of Louis Dyer nervously; then picked up a small folder, and read out loud: "Dangerous for psychological reasons ... to employ Brender.... So many blows in succession. Loss of wealth, position and wife.... No normal man could remain normal under ... circ.u.mstances. Take him into office ...

befriend him ... give him a sinecure, or position where his undoubted great ability ... but not on a s.p.a.ceship, where the utmost hardiness, both mental, moral, spiritual and physical is required--" Hughes interrupted: "Those are exactly the points which I am stressing. I knew you would see what I meant, Louis."

"Of course, I see," said the creature, smiling in grim amus.e.m.e.nt, for it was feeling very superior these days. "Your thoughts, your ideas, your code and your methods are stamped irrevocably on your brain and"-it added hastily--"you have never left me in doubt as to where you stand. However, in this case I must insist. Jim Brender will not take an ordinary position offered by his friends. And it is ridiculous to ask him to subordinate himself to men to whom he is in every way superior. He has commanded his own s.p.a.ce yacht; he knows more about the mathematical end of the work than our whole staff put together; and that is no reflection on our staff. He knows the hardships connected with s.p.a.ce flying, and believes that it is exactly what he needs. I, therefore, command you, for the first time in our long a.s.sociation, Peter, to put him on s.p.a.ce freighter F4661 in the place of s.p.a.cecraftsman Parelli who collapsed into a nervous breakdown after that curious affair with the creature from s.p.a.ce, as Lieutenant Morton described it--By the way, did you find the ... er ... sample of that creature yet?"

"No, sir, it vanished the day you came in to look at it. We've searched the place high and low--queerest stuff you ever saw. Goes through gla.s.s as easy as light; you'd think it was some form of light-stuff--scares me, too. A pure sympodial development--actually more adaptable to environment than anything hitherto discovered; and that's putting it mildly. I tell you, sir--But see here, you can't steer me off the Brender case like that."

"Peter, I don't understand your att.i.tude. This is the first time I've interfered with your end of the work and--"

"I'll resign," groaned that sorely beset man.

The thing stifled a smile. "Peter, you've built up the staff of s.p.a.ceways.

It's your child, your creation; you can't give it up, you know you can't--" The words hissed softly into alarm; for into Hughes' brain had flashed the first real intention of resigning. Just hearing of his accomplishments and the story of his beloved job brought such a rush of memories, such a realization of how tremendous an outrage was this threatened interference.

In one mental leap, the creature saw what this man's resignation would mean: The discontent of the men; the swift perception of the situation by Jim Brender; and his refusal to accept the job. There was only one way out--that Brender would get to the ship without finding out what had happened. Once on it, he must carry through with one trip to Mars; and that was all that was needed.

The thing pondered the possibility of imitating Hughes' body; then agonizingly realized that it was hopeless. Both Louis Dyer and Hughes must be around until the last minute.

"But, Peter, listen!" the creature began chaotically. Then it said, "d.a.m.n!" for it was very human in its mentality; and the realization that Hughes took its words as a sign of weakness was maddening. Uncertainty descended like a black cloud over its brain.

- "I'll tell Brender when he arrives in five minutes how I feel about all this!" Hughes snapped; and the creature knew that the worst had happened.

"If you forbid me to tell him then I resign. I--Good G.o.d, man, your face!"

Confusion and horror came to the creature simultaneously. It knew s abruptly that its face had dissolved before the threatened ruin of its 2' plans. It fought for control, leaped to its feet, seeing the incredible danger. The large office just beyond the frosted gla.s.s door--Hughes' first outcry would bring help With a half sob, it sought to force its arm into an imitation of a metal fist, but there was no metal in the room to pull it into shape. There was only the solid maple desk. With a harsh cry, the creature leaped completely over the desk, and sought to bury a pointed shaft of stick into Hughes' throat.

Hughes cursed in amazement, and caught at the stick with furious strength.

There was sudden commotion in the outer office, raised voices, running feet.i.t was quite accidental the way it happened. The surface cars swayed to a stop, drawing up side by side as the red light blinked on ahead. Jim Brender glanced at the next car.

A girl and a man sat in the rear of the long, shiny, streamlined affair, and the girl was desperately striving to crouch down out of his sight, striving with equal desperation not to be too obvious in her intention.

Realizing that she was seen, she smiled brilliantly, and leaned out of the window.

"h.e.l.lo, Jim, how's everything?"

"h.e.l.lo, Pamela!" Jim Brender's fingers tightened on the steering wheel till the knuckles showed white, as he tried to keep his voice steady.

He couldn't help adding: "When does the divorce become final?"

"I get my papers tomorrow," she said, "but I suppose you won't get yours till you return from your first trip. Leaving today, aren't you?"

"In about fifteen minutes." He hesitated. "When is the wedding?"

The rather plump, white faced man who had not partic.i.p.ated in the conversation so far, leaned forward.

"Next week," he said. He put his fingers possessively over Pamela's hand.

"I wanted it tomorrow but Pamela wouldn't--er, good-by."

His last words were hastily spoken, as the traffic lights switched, and the cars rolled on, separating at the first comer.

The rest of the drive to the s.p.a.ceport was a blur. He hadn't expected the wedding to take place so soon. Hadn't, when he came right down to it, expected it to take place at all. Like a fool, he had hoped blindly Not that it was Pamela's fault. Her training, her very life made this the only possible course of action for her. But--one week!

The s.p.a.ceship would be one fourth of the long trip to Mars He parked his car. As he paused beside the runway that led to the open door of F4661--a huge globe of shining metal, three hundred feet in diameter--he saw a man running toward him. Then he recognized Hughes.

The thing that was Hughes approached, fighting for calmness. The whole world was a flame of cross-pulling forces. It shrank from the thoughts of the people milling about in the office it had just left. Everything had gone wrong. It had never intended to do what it now had to do. It had intended to spend most of the trip to Mars as a blister of metal on the outer shield of the ship. With an effort, it controlled its funk, its terror, its brain.

"We're leaving right away," it said.

Brender looked amazed. "But that means I'll have to figure out a new orbit under the most difficult--"

"Exactly," the creature interrupted.

"I've been hearing a lot about your marvelous mathematical ability.

It's time the words were proved by deeds."

Jim Brender shrugged. "I have no objection. But how is it that you're coming along?"

"I always go with a new man."

It sounded reasonable. Brender climbed the runway, closely followed by Hughes. The powerful pull of the metal was the first real pain the creature had known for days. For a long month, it would now have to fight the metal, fight to retain the shape of Hughes--and carry on a thousand duties at the same time.

That first stabbing pain tore along its elements, and smashed the confidence that days of being human had built up. And then, as it followed Brender through the door, it heard a shout behind it. It looked back hastily. People were streaming out of several doors, running toward the ship.

Brender was several yards along the corridor. With a hiss that was almost a sob, the creature leaped inside, and pulled the lever that clicked the great door shut.

There was an emergency lever that controlled the antigravity plates.