I nodded understandingly.

"Dr. Pilon, I really came down here to make inquiries about Doctor

Chetzisky."

"Yes?" His eyes took on that cunning look again. He knew something, I

was sure. I wondered how much.

"You knew him, I believe."

"I did. In fact, I visited him once, you know." He looked at me, a

suppressed grin trembling in the corners of his thin mouth, with the

air of a mouse that has deftly side-stepped the swiping paw of a cat.

"A peculiar man, wasn't he? Had some strange ideas."

"Peculiar, yes. In the same sense that Mahatma Ghandi was peculiar," he

snapped at me, the blue eyes gleaming with a fanatic's adoration. "As

for strange ideas, bringing peace to this fear-ridden planet can hardly

be called one."

* * * * *

Ah, so Pilon knew! He realized immediately he had given himself away

and became morosely truculent; I had reached the end of the line with

him. But I had one card left: Pilon's diary.

While talking to him, I had spotted the marble-edged ledger on the

crate-improvised table in the corner of the tent. I was sure it was his

journal; I hoped earnestly that it was.

We drank a final cup of coffee in silence while I ransacked my brain

for some subterfuge to get Pilon out of the tent. In the end the whole

thing was very simple. I asked him if the jeep was ready to take me

back to Katanga. He went outside to see.

I went quickly over to the table, slipped the ledger from under two

other books, technical journals, and leafed swiftly through the pages.

They were dated. I was in luck; it was a diary.

I turned to the date of Pilon's reported visit with Chetzisky and there

I found the entry:

_JUNE 21:--Visited Doctor Chetzisky today. A brilliant man, deeply

concerned for the world. His words moved me as he spoke of policing

the world into peace. His hopes, he told me in strictest confidence,

rest on an ore discovery by Ian MacRoberts of British Columbia, a

university geologist, who seems to have found a new radioactive

element easily controlled. The Doctor has received a sample from

MacRoberts today to verify the preliminary spectroscopic analysis.

When I left, Doctor Chetzisky shook my hand warmly. I wished him

success and promised secrecy. He is one of the obscure great men of

our times._

I barely finished reading when Pilon's footsteps sounded outside. I

closed the book quickly and greeted him when he entered. The jeep was

ready, he said, and wished me a pleasant and safe trip to Katanga.

The jeep was just starting off when a native ran up, shouting that

Bwana Pilon wanted to see the driver. I sat in the car, waiting

uneasily, remembering that I hadn't slipped the ledger back in place; I

hoped Pilon hadn't noticed.

Fifteen minutes went by. I climbed out of the jeep and went in search

of the driver, who was sitting in Pilon's tent, regarding his watch

from time to time.

"Doctor Pilon asked me to wait here for twenty minutes before going,"

the driver explained. "He said something about he might have a package."

My eyes wandered to the corner table. I drew a deep breath. The ledger

was gone.

"I guess we can go now, sir." The driver left the tent.

I followed him and got into the jeep with a growing foreboding. The sun

was low in the sky, fading rays dissolving into twilight. I hunched low

in my seat, the flesh creeping on the back of my neck as if a gun was

sighted on it. Now that Pilon knew I had read his diary, there was good

chance he might try to keep me from getting back alive to Katanga. With

the ruthlessness of the fanatic Pilon might feel he owed that much to

"the great man" Chetzisky.

A mile from camp the trail broke out of the jungle onto a swaying

suspension bridge across a deep gorge. The driver inched the jeep

across. Looking down I felt nauseous; a fall and a man was a shredded

pulp.

Half way across the span it happened. A rifle cracked. The air whined

at my ear. The driver slumped stupidly against me and the jeep swerved

crazily out of control. I leaped out on the bridge just as the jeep

dropped into the gorge. I ran a few yards and hurled myself to the

boards; a bullet whistled over me.

I was on my feet again. Another shot rang over. I thanked God for the

sway of the bridge; it put the crimp in anyone's marksmanship.

I disappeared into the shelter of the jungle on the other side. The

battle was joined; it was Pilon's life or mine. He couldn't let me

live, and I couldn't let him. If I got away, he would get in touch with

Chetzisky who probably wouldn't wait till the deadline to pull the

switch.

* * * * *

Crouched in the brush, panting and slightly dizzy from unaccustomed

exertion, I watched Pilon stalking across the bridge, rifle at the

ready. My breath began to come easier and my head cleared.

He was across now. He moved into the trail, eyes straining into the

shadows. For a moment I had the mad notion of rushing him until I

realized in what poor condition my academic life had left me for any

wrestling with an outdoor type like Pilon.

Instead I would lure him to the edge of the gorge. Disturbing the

undergrowth to look for a stone would be suicide; the noise would

attract his attention and fire. As a substitute missile I slipped off

my wrist-watch, clipped my pen on the band, and lofted them across the

trail into the brush near the gorge, praying they would make enough

noise.

They did.

Pilon turned sharply. For a moment he listened. I was certain he would

hear my heart pounding wildly. Cat-like he made his way to the spot

where my missile fell, probing the leafy undergrowth with the rifle.

Then, calling on four years as blocking back at Princeton, I raced out

of hiding. Pilon half twisted in surprise as I smashed into him with

a rolling hip block that sent him teetering backwards over into the

gorge. I can still hear that long shrill scream of terror echoing in my

ear.

The impetus of my drive carried me into the bush. I disentangled myself

and looked over into the dry, rocky bed of the gorge. Two forms lay

motionless there, in dark spreading splotches.

Thoroughly shaken, I stumbled over the bridge and back along the

darkening trail to Pilon's camp, where I collapsed in a stupor on the

dead man's cot, too exhausted for superstitious misgivings, and fell

into a deep sleep.

In the morning a native runner went into Katanga to notify the

authorities of the deaths and to have another jeep sent out for

me. For two days I was held up in Katanga during the inquest and

inquiry. Disney flew down to talk with me, angry that I should upset

the leisurely routine of his existence. My explanations, from which

I omitted any mention of Chetzisky, didn't satisfy him, but he let

matters rest rather than perturb himself by probing further.

_EXTRACTS, HOSPITAL CASE HISTORY NO. 3007_:

_6:35 P.M. Thrombopenia very far advanced. Blood bubbling at

patient's lips. Lab reports heparin in blood stream.... 6:50 P.M.

Noted radiologist flown in by jet bomber from Los Angeles. Says

there is no hope. Radioactive element absorbed through lacerations

in patient's body and is now fixed irrevocably in bone marrow.

Patient seemed to smile at radiologist._

I wonder who that serious looking gentleman is who was just examining

me. I couldn't help smiling at his pompousness; you'd think he was a

judge reading out a death sentence.

Where was I? Oh, yes, back in Katanga. From there I wired the

University that I would be unable to give my last two lectures of the

semester. The Congo dateline on the telegram must have raised the

shaggy brows of the venerable Chancellor who till then thought I was no

farther away than my rooms at the opposite end of the campus.

Armstrong I had cabled immediately with the information about

MacRoberts. I was sure that while I marked time in Africa he would be

Starting the chase in far-off British Columbia. Still, the waiting made

me restive, and more so when after leaving Leopoldville I lost another

day. Engine trouble forced the _Constellation_ down at Accra, where

foul weather closed in to keep us grounded.

Finally back in Washington, I ticked off another day on the pocket

calendar. Only seven days more.

I went directly to the _Statler_ where Armstrong had his rooms. He

greeted me enthusiastically, ordered up some drinks, and plunged right

into business. "Arnold, thanks to the lead you picked up in the Congo,

we have a good idea where Chetzisky is."

Armstrong unfolded a map with places circled in red and notations

scribbled in. "He is somewhere in this area north of Ootsa and Burns

lakes. Trappers in the region have identified his photograph. Also

we've traced some significant shipments into the area. Paraffin,

boron-steel, graphite among other things."

They were significant; they were all materials that could be used in

an atomic reactor, principally as moderators to control the neutron

irradiation.

"Any word of MacRoberts?" I asked.

Armstrong gave me a quick briefing on the Canadian geologist. Single,

fairly well off, Ian MacRoberts spent his summers away from his

teaching chores at the University prospecting for minerals, chiefly in

one of the least explored portions of the continent, the Rocky Mountain

Trench. A transport lost there in 1940 has never been found.

Notes found in MacRoberts' lodgings in the Vancouver suburb of

Kerrisdale revealed he had discovered a strange new mineral of

marked radioactivity. He made his first find near Lake Babine and

traced outcroppings of it as far south as lower California. From his

fragmentary data MacRoberts was convinced that a vein of this mineral

dipped through the earth's crust at an inclination of 27.6°. Six months

ago he had been given a leave of absence from the University; since

then he had been seen twice in the company of a man fitting Doctor

Chetzisky's description. Information indicated both had headed for the

Interior.

"Well, Jim, what are your plans?"

"I have arranged already for groups of searchers to move secretly out

of Prince George and Hazelton." His pencil slid over the map. "But

you're the key man, Arnold; these groups will only close in on the word

from you.

"You're going to fly into Tweedsmuir Park, ostensibly as a tired

business man on vacation. It's not unusual up there. Even Hollywood

stars like Crosby have escaped into the Tweedsmuir reserve for rest and

a new horizon."

* * * * *

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