Stokely sneered. "You'll have a hard time selling me that idea!"

"I don't think so, when you see the point. You're forgetting that in

this case, a false cure is just as deadly as the disease. I don't

know just how full of the virus the air is hereabouts, but as far as

either of us can tell, you may be cutting down your chances of getting

infected. Evans' chance, and mine, with full exposure, will be four out

of five. That means if we can't find out for sure whether we have it,

we can take an injection and be 80 percent sure of being right.

"How sure can you be?"

Stokely's face set in a grim mask as the realization sank in. He

removed his globe and set it out before him on the ground. Again the

gun raised to Archer's chest.

"Okay, bright lad, you put it on!"

Archer smiled thinly and shook his head. "Could you be sure that I

don't know more about the infection than I've admitted? In which case,

it might be a trick to get the globe for myself."

Stokely's face was twisting dangerously again, and Archer went on

quickly:

"Better leave us all in the same boat, anyhow--it'll work out better

later on."

It was a full, tense minute before Stokely's fury subsided to a point

where he could speak.

"I think I'm making a mistake in letting you live," he said thickly.

"This plan of yours had better be good. How does it work--with mirrors?

Let's have it!"

"Lacking mirrors of a size which would show a good contrast--say about

ten feet square," Archer returned calmly, "we'll have to use other

means. My plan will give each of us an equal chance, at least. I'll

tell you the first part now: we take all the jade we can find around

here, before dark if possible, and go back to the ship. I'll tell you

the next step when we get there. If that isn't good enough--or if an 80

percent chance _is_--you can shoot and be damned!"

* * * * *

It was nearly three hours later, very dark and very cold, when they

returned to the ship. Archer and Evans carried Dr. Grimwood's body,

consigned to the same storage compartment as the dead prospector's.

Stokely evidently had not altogether abandoned his original plan for

disposing of the evidence. The question now, Archer thought grimly, was

how many bodies there would be.

Stokely himself carried the jade, of course. Under his prodding, they

had literally left no stone unturned in the vicinity of the deposit. It

had yielded nine pieces of varying size and a total weight of perhaps a

hundred and fifty carats. They added up to riches beyond imagining.

One of the lockers, as would be expected aboard a prospector's ship,

contained an assortment of standard chemicals, and Archer lost no time

in locating a bottle of ethyl alcohol. There was also a balance and a

set of weights.

"The next step is simple," he said, anticipating Stokely's question.

"I make up a solution of antitoxin. There are hypodermics in the

medical kit, which is in the control room. The doctor put the one we

found up there in it, and I'm pretty sure I noticed a couple of others.

Perhaps you will trust Evans to go get it, and in the meantime, I'll

trouble you for about 30 carats of jade."

"Thirty carats! That's enough for all three of us! We may not all be

infected."

"No--as a matter of fact the odds work out to be only a little better

than 50-50 that we all have it. But we've all got to have the means of

doing something about it if we find out--otherwise the plan won't work.

"_If_ we find out!" Stokely echoed harshly. "Archer, you've stalled

around long enough! What is this plan?"

Archer looked at him in open disgust. "_You've_ stalled around long

enough! There's only 20 more minutes until the three-and-a-half hour

deadline. Let me get the stuff made and then we'll talk about it.

Incidentally, 30 carats is less than the share you offered me--and also

a lot less than I value my life. So you can figure the shots are on

me."

With a reluctant grimace, Stokely removed the utility kit from his belt

and poured out a small but dazzling cascade. Archer weighed several

combinations of the smaller gems, and found one group of three which

came to a little under six and a half grams or about 32 carats.

Unceremoniously, he dumped them into a small beaker, and poured in a

little alcohol. After a minute or so, they softened and dissolved.

Archer added distilled water and stirred the solution gently.

Evans returned from the control room and handed the medical kit to

Archer, who took out the three hypodermics. Forcing himself to take

great pains, he divided the solution among the three.

"No time to sterilize these," he said. "Not that they should need

it. Here is the one used by the dead man--I don't mind taking it, if

anybody else does. This next one has a little more in it than the

others. Stokely, you're the biggest, so--but suit yourself. Now let's

get these suits off and get outside."

"Why can't we wear the suits?" asked Evans. "It's freezing out there!"

"Because they're opaque," said Archer patiently, "and the aura is so

faint that your cranium alone probably wouldn't give off enough to be

visible. Personally, I'm going to strip to the waist. I'd be inclined

to strip further, if it weren't for the fact that some of those

crawling things out there are about as deadly as the virus."

* * * * *

In silence, the three men climbed down from the airlock, their

flashlights cutting holes in the thick darkness. Faria was a moonless

planet, and the hour was late.

Under the watchful eye of Stokely, Archer walked clear of the

retractable landing supports and shone his flashlight about the small

level area in which the ship was fairly centered. He held the beam

steady on an outcropping of rock about 40 feet away.

"There's a good background for you, Stokely. It faces the lock, and I

imagine you'll want to do the same."

He swung the flashlight slowly around. There were several piles of

boulders standing about, and Archer indicated two of them, each about

120 degrees from the first.

"Evans and I can take those two positions. That way we'll form a

triangle, each of us about 40 feet from the ship, and in plain sight

of the others--that is, _if_ we develop that fatal glow. In any case,

Stokely, I think you can depend on us staying put until we find out,

since--"

"And then what happens?" Stokely demanded impatiently. "How do we find

out--without trusting each other? The whole set-up sounds silly to me!"

"It's my life, too," Archer reminded him. "And in case you're in any

doubt, I don't trust you, either. Here's the plan: As you know, all of

us were exposed within a very few minutes of each other. That means,

according to our late friend, the doctor, that in ten to 12 minutes

from now--perhaps a few minutes longer--one or more of us should show

the symptomatic aura.

"Now there's the point: _one or more_ of us. There's an excellent

chance we won't all show it. Allowing an adequate margin, the next 20

minutes should reveal who has the infection and who hasn't. I propose

that at the end of that time each of us in turn announces, not which

of the others shows it but simply whether he sees the aura at all. He

doesn't tell whether one or both of the others shows it, but merely

whether _at least one_ does."

"What good would that do anybody?" asked Stokely glumly.

"None, in itself. But you forget that all of us will be reporting. For

instance, supposing Evans says he sees it, but I don't show it, or vice

versa--two very distinct possibilities. Then you'd know that the only

place Evans could have seen it--"

"What if he were lying?" Stokely put in sharply.

"That's the general idea in back of the whole scheme. He couldn't get

away with it. If he said he saw it and didn't, it could only mean that

neither you nor I showed it. In that case--which is one of the lesser

possibilities, incidentally--I'd be led into the same error that you

would. But it would then be very much to our mutual benefit to compare

notes before taking any injection.

"If he said he didn't see it, and either of us had it, the other would

know he was lying. If we can't trust each other to tell the truth, we

can't very well depend on each other to back up our lies--especially

when there is everything to lose by it. If you knew Evans was lying

about me, how would you know whether he was telling the truth about

you?"

"Now listen!" protested Evans, who seemed to be shivering as much with

fear as with the cold, "you guys talk like you expected me to pull a

fast one. Hell, it's complicated enough if we all tell the truth--don't

worry about me!"

"I was using you for an example," Archer told him. "The same thing

applies to each of us, and we should all be able to see that honesty

is the only workable policy. There's one more little matter to be

decided: the order in which we report. I think it would be fair to

reverse the order of exposure, which would probably make it the order

of observation. I was exposed last, so I'll report first, then Evans,

then Stokely.

"Now I'd suggest we take our positions, so we can kill these lights and

let our eyes get used to the dark. There's only six to eight minutes to

go."

Archer turned and started off, half expecting some last-minute

objection from Stokely. But the latter merely waited to assure himself

by means of his flashlight that Archer and Evans were half-way to their

appointed places, then started making his way toward his own.

* * * * *

The spot to which Archer had assigned himself turned out to be a

jumble of loose rocks, complete with small and unpleasant denizens.

He frowned. The footing would be very bad for dodging bullets, should

matters turn out unsatisfactory to Stokely.

As the latter reached his position, about 75 feet away, Archer called

out:

"Let's all face the ship, and don't anybody move after the lights are

out, or you'll lose your orientation. Don't even shift your feet! Four

to six minutes to go--but it could be sooner! I'm stripping down now."

He switched off his flashlight, and after a moment, Stokely and Evans

did likewise. The night closed in disconcertingly, the utter dark

wiping out all visual cues and rendering one's very balance momentarily

precarious.

Archer removed the watch from his wrist and placed it in his

pocket. Its face was luminous, and he was uncertain of its possible

competition. He doffed his jacket and tied it about his hips, then

unzipped his shirt to the waist and slipped it from his shoulders,

tucking the sleeves into his belt.

The air was too dry for a sudden shock of cold, but within seconds his

outer flesh began to ache dully, and there was difficulty in expanding

his chest sufficiently to breathe. He wondered how much of it a healthy

man could stand before pneumonia became certain.

Stokely was apparently trying to warm things up in his vicinity with a

muttered string of vehement oaths, and Archer thought he heard a low

groan from the direction of Evans.

The black border of the horizon was becoming visible now against the

lesser darkness of the sky. Directly before him was the outline of the

ship, the control-room ports showing dim and ghostly above with the

light seeping up from the waist compartment.

Archer began turning his head back and forth at about ten-second

intervals, staring into the blackness approximately 60 degrees each

side of center, swinging his arms and flexing the muscles of his torso

in a losing battle against the advancing numbness.

He started suddenly at a slight sound of movement in the rocks not two

yards away in the direction of Evans. But it was far too faint for

human feet on that treacherous ground. More probably it was some small

monster--quite possibly attracted by the dubious warmth of Archer's

body, which was certainly radiating for all it was worth.

Wryly, he thought of one of the more abhorrent of the local fauna, a

lizard-like creature which attacked any animal which had the single

qualification of being within a considerable jumping range. The beastie

combined the least intelligence with the most virulent poison in

several star-systems. With barbed feet and tail, it clung to its victim

through the death throes--which usually began immediately--and unless

torn apart or crushed in the process, it fed. Fortunately, the species

was one of hundreds equally numerous and generally less deadly.

* * * * *

At least five minutes had passed, by the most meticulous of estimates,

when Archer saw the glow. He had been looking at it for several

seconds, in the direction of Stokely, before he realized what it was.

He had expected a modification of the greenish luminescence of the

jade itself. But this was a mere patch of gray in the blackness, to

begin with. It whitened, gradually revealing the blurred silhouette of

the man within it. At that level it remained, and his outline grew no

sharper. By blinking several times, Archer was able to distinguish the

arms from the rest of him, and assumed from their respective positions

that Stokely was holding his gun in his left hand, the syringe in his

right.

It seemed twice as long--by which Archer judged it was about

half--before a similar dusky patch became visible in the direction of

Evans. He showed up very soon thereafter, because unlike Stokely, he

was churning his arms as if in direct combat with the cold.

Archer began to count slowly to himself, swinging his arms in a

period of about a second. He had not done so before, because it would

have served no particular purpose, and would have made the time seem

even longer. Now it was important not to allow too long an interval

following the second revelation of the deadly symptom. There must not

be too much time for the others to think about the situation.

Yet there must be enough to insure his showing the symptom himself, if

he were going to. He estimated that Evans' period of "incubation" had

varied from Stokely's by about a minute, allowing for the difference in

the time of exposure. If Archer's varied from Evans' by as much as two

minutes, there could still be three minutes or more to go. Of course,

it was possible that he already showed it--or even that he had been the

first. Five minutes should allow a safe margin, he decided.

Two minutes of it were now gone. Archer's arms felt like lead-weighted

pendulums, yet he restrained the tendency to urge them to more rapid

motion. The count of 60 took a small eternity.

Three minutes. His arms were so numb it was occasionally difficult to

tell for sure when they had reached the end of their swing. It would

have been reassuring to be able to see them. He widened his eyes and

blinked rapidly, trying to penetrate the dark, and momentarily he

almost fancied he saw a dim haze about him. He thought of the dead man

they had found in the pilot's seat. There were no limits to the fallacy

of human vision, under emotional stress.

Four minutes. If the original 20-minute period happened to be over

and the others were aware of it, they made no sign. That would not be

strange. Having agreed that Archer would make the first report, they

would hesitate to venture any comment, for fear of dropping some kind

of hint.

Five minutes. Archer fumbled awkwardly for his watch. If all his

estimates, pieced together, were correct, there should still be a

minute to go.

He was amazed to find that there was not. By leaning over backward in

his guesses, he had actually managed to be conservative. The time was

up--in fact, it was almost 15 seconds past. It was time to get the

formalities over with and end this desperate game.

"All right!" Archer said loudly, his voice cracking slightly. "It's

time to report, and here's mine--" He paused briefly, then finished: "I

see it."

* * * * *

It was now up to the others either to lie or to admit they saw it. It

didn't particularly matter which, but Archer rather expected the truth.

Evans was next.

After a moment, the latter's voice came somewhat falteringly, but

clearly enough: "I see it."

Surprisingly, Stokely did not keep them waiting. His report came

immediately, in a hoarse monotone: "I see it."

_Now._ Archer's gaze swung back and forth between the two others during

the space of a long breath. Their shadowy figures did not move, but

stood irresolute.

Archer exhaled with vast relief. "Okay, you fellows," he announced,

"we've all got it. Here goes my injection."

Watching Stokely carefully, he plucked the syringe from his belt with

enormous caution, and forced his feeble right hand to drive the needle

into his left forearm and press the plunger all the way. There was one

slight advantage to the cold, after all--he hardly felt the perforation.

He dared not pull up his shirt as yet. It could very easily have the

effect of making him fade partially from Stokely's view, and might

provoke the big man into blazing away at him.

It was quite possible that Stokely would shoot anyhow, though under the

circumstances his aim might not be at its best.

"You lie!" Stokely said suddenly, as between clenched teeth. "The only

way you could know about yourself would be if I didn't have it. Then

you'd know where Evans must have seen it."

"One minute ago," said Archer, "that would have been true. And if

you had thought of it a minute ago, instead of just now, things might

have been different. But putting yourself in my position with respect

to Evans, or in his with respect to me, was too big a step for your

egocentric mind. You haven't quite done it yet, or you would understand

this:

"If you hadn't shown the aura, I would have known _instantly_ that I

did. Also, Evans would have known about himself, immediately. But we

didn't know, immediately. None of us did. And there is only one way we

could all see it and remain uncertain. That is for all of us to have

it. I didn't know, you both didn't know--and therefore I knew. Can you

follow that?"

After a pause, Archer went on: "Incidentally, I wouldn't let a dog die

the way both of you are going to in the next few minutes unless you do

something about it. That's why I've taken the trouble to explain it."

Evans suddenly cleared his throat, and his voice came plaintively:

"Uh--are you sure I've got it, Mr. Archer?" The necessity of the

conclusion was clearly beyond him.

"Quite sure," Archer returned, noting that Evans had sought the truth

from him instead of his own colleague in crime.

"That's good enough for me." Evans' motions showed dimly that he was

making the injection.

But Archer spared him only a glance and turned back to watching

Stokely. The latter had not yet moved.

"Okay, Stokely," said Archer, "I'll give you a better break than you'd

give me--I'll prove it to you. You're facing me now. Raise either arm,

and I'll tell you which one it is."

Stokely seemed to hesitate, then raised both arms to the horizontal.

"You're pretty sharp, at that," Archer told him, "when it comes to

thinking from your own corner. You raised both of them."

Stokely's arms dropped, but not all the way. There was a motion as of

applying the hypodermic.

Quickly, Archer drew the sleeves of his shirt over his arms. But he

had counted too heavily on Stokely's preoccupation. The latter turned

rigidly, as if continuing the injection, and fired.

Archer felt a shock which spun him half around, but could not tell just

where he was hit, for the moment. He began to run awkwardly through

the loose rocks toward the sanctuary of the pile of boulders, raising

his jacket high to screen his head. In doing so, the location of his

wound became evident with a jab of pain. His left arm was useless.

The next instant, the glaring beam of Stokely's flashlight picked him

out, and the second bullet spanged against a boulder just as he ducked

behind it, peppering his cheek with rock dust.

Stooping low, Archer moved around the pile, as the crunching sound of

Stokely's rapid footsteps came closer. He cursed the luck that had

enabled Stokely to cripple him. He felt his paralyzed arm gingerly--the

bullet had struck just below the shoulder, and he guessed that the bone

was broken, but the wound did not seem to be bleeding much.

There was no use making a break for the next heap of rocks over this

treacherous ground, even if he knew precisely where it lay. He would

simply have to play tag with Stokely until--

Suddenly, the footsteps slowed and seemed to stumble. There was a

clattering among the rocks and the lancing beam of the flashlight cut

off. Darkness and silence descended.

* * * * *

Will Archer waited tensely. If all were well, Stokely should be out

like the light he had been carrying. But Archer was in no hurry about

using his own. It would make him altogether too vulnerable, in case

this just might be a ruse.

Then from a little distance came the welcome beam of Evans' light.

Archer peered out carefully and beheld the prone, unmoving figure of

Stokely, his arms doubled under him as if to break his fall.

Unhurriedly, Archer turned on his own flashlight, walked around and

set it between two rocks so that its beam made a path of light between

himself and the ship. He rolled the big man over with a thrust of

his foot, exposing the gun underneath. This, and one gun from the

unconscious man's two holsters, Archer picked up and stuck in his belt.

The remaining one--Archer's own--he pointed at Evans, who had stopped

ten yards away.

The latter wore a puzzled expression--apparently at having found the

wrong body.

"What did you do," he asked Archer, "hit him with a rock? Is he dead?"

"I wish I had," said Archer without humor, "and I wouldn't feel a bit

bad if he were. In fact, I intend to see to it that he is lawfully

executed. But in order to do that it will be necessary to get him back

to the base. You're elected to drag him over to the hoist."

Archer stooped again, without taking his eyes off Evans, and laid his

gun on the ground. He took the kit of jade from Stokely's belt and

pocketed it, then picked up the gun again and stepped back a few paces.

"You can fasten his arms with his own belt," he told Evans, "and his

legs with yours. He should sleep for hours, but there's no use taking

chances."

Evans came forward meekly and bent over Stokely, then looked up,

startled. "The hypodermics! You must have put something in ours that--"

"Not yours. Do you recall how willingly he took the one with the most

in it? Well, he got no more antitoxin than you and I did. The rest was

a quick-acting sedative that the doctor brought aboard in case we ran

into a lunatic. I emptied most of it into the distilled water, but I

left enough to do the trick. I trust you're buckling that belt good and

tight."

Evans' blue lips twisted glumly as he pulled off his own belt and

applied it to Stokely's ankles. Suddenly, he smiled.

"Say! What makes you think they'll believe your story about what

happened? It's your word against ours. Suppose we tell 'em that--"

"You're daydreaming," Archer broke in. "You'll be a lot better

off to resign yourself to spending five or ten years in a penal

colony--probably on some planet worse than this one.

"In the first place, you could never pass the lie-detector test,

although Stokely might. In the second place, it isn't just my word

against yours--our psychometric ratings will be weighed, too, and I'll

let you guess whose will be found wanting. And finally, what kind of

criminal will murder for profit, then change his mind and toss the loot

on the manager's desk, of his own free will?

"Which is just what I intend to do. But there'll be one string

attached. A sizable hunk of this stuff, together with a shiny new

mallet, goes to Dr. Grimwood's pals."

Phantom Duel · 第 6 / 6 题