Arnold indicated the empty glass. "Another?"

"No, I think not," Beardsley replied carefully.

Arnold hesitated, eyeing the briefcase in Beardsley's clutch. "It's been

rough on you, too, I imagine. Hope there aren't more than thirty

variants! We're set up for more, of course, but it'll necessitate--"

"Twenty-two," Beardsley assured him. Carefully, he spread the coded and

sealed _persona-tapes_ across the desk. "Fresh from Citizen-File

Augment, everything annotated and cross-checked. Blood-count, emotional

stasis, plethora, psycho-geneological index, neuro-thalamic

imbalance--every type factor is here. We really went to the Files on

this case."

"Looks as if you did! How does it narrow down?"

"Fifteen possibles, four Logicals and three Primes--" Beardsley stopped

abruptly. (That news-caster: how had he known there were three Primes?

This stuff was not supposed to leak!) "Twenty-two who _knew_ Carmack,"

he went on. "That includes associational as well as motive-opportunity

factors, with a probability sphere of .004...."

Arnold nodded thoughtfully; his fingers moved unconscious and caressing

across the edge of the desk. "Yes, I see. That's close! Good job," he

said uncertainly.

"Should be! Seven weeks for annotation and code." Beardsley was watching

Arnold's fingers; there was something aimless and fretful as they pushed

among the code-sealed tapes. Beardsley made his voice casual. "If it

interests you," he said, "yes--you are there."

* * * * *

He wanted a reaction and he got it.

"Me!" Arnold stiffened, pulled his fingers away hastily.

"That surprises you? Don't worry, you're not one of the Primes; probably

be rejected on the first run. It's just that you once knew Carmack

rather well. Cal Tech, wasn't it, when Carmack was doing his special

work on magnetronics? Naturally you've had contact since, due to the

nature of your job."

Arnold nodded, frowning. "That's right. It just hadn't occurred to me

that--"

Beardsley realized that he wasn't lying. _It was not the thought of his

own tape that bothered Arnold._

"Oh, we're thorough over at 'Cooerdinates Division!'" Beardsley laughed,

making a minor joke of it. "Now here," he touched a spool labelled in

red, "is your Basic Invariant. Carmack--Amos T. Murdered man. Found

bludgeoned in library of his home, night of April 4. Age 56, held all

outstanding patents on ECAIAC, worth millions, and"--he looked up,

beaming--"leaves beautiful wife."

He paused for the merest moment. Save for a soft drumming of fingers on

the desk, Arnold was silent.

"And here's a sub-Basic: Mrs. Carmack will be a rich woman now. She was

considerably younger than Carmack--and she's been having an affair with

another man." Beardsley smiled at Jeff Arnold. "That's a sociological

note beyond our sphere, but we managed to get the data. I'll bet the

department was appalled that such a gorgeous woman could be resolved

into neo-Euclidian equations!"

"Why?" Arnold was suddenly irritable. "It's been done a thousand times

before!"

"Of course," shrugged Beardsley. "And it's really up to ECAIAC, isn't

it? A Prime can be negated, while on the other hand a variant can shift

from possible to Logical to Prime. Or am I wrong? I've never been up on

the mechanics."

Arnold grunted. "There's bound to be some correlatory shift! The

Primes--how many did you say?"

"Three as of now."

Arnold rose abruptly, then strode to the alco-mech and dialled himself

another drink. He took an uncommonly long time about it. "Look," he

said, "we both know about these things! In a case like this there are

bound to be political repercussions--" He hit Beardsley with a gauging

glance. "Well," he blurted, "I have to admit I'm damn curious! Mind

telling me who are the three Primes? Ah--strictly off the record, you

understand."

Beardsley had expected something like this, and he was quite ready to

answer; but he carefully removed his glasses, massaged the bridge of his

nose and frowned. "Well, now...."

"Come on, give! I know it's against protocol and all that ... but hell!

We'll have the answer anyway in a matter of hours."

Beardsley nodded with a show of thoughtfulness. "Yes, that's true, isn't

it? Very well. But strictly off the record! I warn you--not only will

the first Prime startle you, but the information could be dangerous!"

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