the fuel to burn and be dispersed, and destroying the rocket The explosion was triggered by a coded radio signal. The blueprints showed twin plugs, one for the transmitter on the ground and the other for the receiver in the satellite. One turned the radio signal into a complex code; the other received the signal and, if the code was correct, applied the voltage across the twin wires. A separate diagram, not a blueprint but a hastily drawn sketch, showed exactly how the plugs were wired, so that anyone having the diagram could duplicate the signal.
It was brilliant, Luke realized. The saboteurs had no need of explosives or timing devices - they could use what was already built in. They did not need access to the rocket: Once they had the code, they did not even have to get inside Cape Canaveral. The radio signal could be broadcast from a transmitter miles away.
The last sheet was a photocopy of an envelope addressed to Theo Packman at the Vanguard Motel. Had Luke prevented the original being mailed? He could not be sure. Standard counter intelligence procedure was to leave a spy network in place and use it for disinformation. But if Luke had confiscated the original, the sender would have mailed another set of blueprints. Either way, Theo Packman was now somewhere in Cocoa Beach with a radio transmitter, ready to blow up the rocket seconds after it took off.
But now Luke could prevent that He glanced at the electric clock on the wall. It was ten-fifteen. He had time to call Cape Canaveral and have the launch postponed. He snatched up the phone on the desk.
A voice said: 'Put it down, Luke.'
Luke turned slowly, phone in hand. Anthony stood in the doorway in his camel-hair coat, with two black eyes and a swollen lip, holding a gun with a silencer, pointing it at Luke.
Slowly and reluctantly, Luke cradled the phone. 'You were in the car behind me,' he said.
'I figured you were in too much of a rush to check.'
Luke stared at the man whom he had so misjudged. Was there some sign he should have noticed, some feature that should have warned him he was dealing with a traitor? Anthony had a pleasantly ugly face that suggested considerable force of character, but not duplicity. 'How long have you been working for Moscow?' Luke asked him. 'Since the war?'
'Longer. Since Harvard.'
'Why?'
Anthony's lips twisted into a strange smile. 'For a better world.'
Once upon a time, Luke knew, a lot of sensible people had believed in the Soviet system. But he also knew their faith had been undermined by the realities of life under Stalin. You still believe that?' he said incredulously.
'Sort of. It's still the best hope, despite all that has happened.'
Maybe it was. Luke had no way of judging. But that was not the real issue. For him, it was Anthony's personal betrayal that was so hard to understand. 'We've been friends for two decades,' he said. 'But you shot at me last night'
Yes.'
'Would you kill your oldest friend? For this cause that you only half believe in?'
Yes, and so would you. In the war, we both put lives at risk, our own and other people's, because it was right'
'I don't think we lied to one another, let alone shot at one another.'
'We would have, if necessary.'
'I don't think so.'
'Listen. If I don't kill you now, you'll try to stop me escaping - won't you?'
Luke was scared, but he angrily told the truth. 'Hell, yes.'
'Even though you know that if I'm caught, I'll finish up in the electric chair.'
'I guess so ... yes.'
'So you're willing to kill your friend, too.'
Luke was taken aback. Surely he could not be classified with Anthony? 'I might bring you to justice. That's not murder.'
'I'd be just as dead, though.'
Luke nodded slowly. 'I guess you would.'
Anthony raised the gun with a steady hand, aiming at Luke's heart Luke dropped behind the steel table.
The silenced gun coughed, and there was a metallic clang as the bullet hit the top of the table. It was cheap furniture, and the steel of which it was made was thin, but it had been enough to deflect the shot Luke rolled under the table. He guessed Anthony was now running across the room, trying to get another shot at him. He raised himself so that his back was against the underside of the table. Grabbing the two legs at one end of the table he heaved, standing upright at the same time. The table came up off the floor and teetered forward. As it toppled, Luke blindly ran with it, hoping to collide with Anthony. The table crashed to the floor.
But Anthony was not beneath it Luke tripped and tumbled onto the inverted table. He fell on his hands and knees, and banged his head on a steel leg. He rolled sideways and came up into a sitting position, hurt and dazed. He looked up to see Anthony facing him, framed by the doorway that led into the lab, braced with his feet apart, aiming his gun two-handed. He had dodged Luke's clumsy charge and got behind him. Luke was now, literally, a sitting target, and the end of his life was a second away.
Then a voice rang out: 'Anthony! Stop!'
It was Billie.
Anthony froze, gun pointed at Luke. Luke slowly turned his head and looked behind him. Billie stood by the door, her sweater a flash of red against the army-green wall. Her red lips were set in a determined line. She held an automatic pistol hi a steady hand, levelled at Anthony. Behind her was a middle-aged Negro woman, looking shocked and scared.
'Drop the gun!' Billie yelled.
Luke half expected Anthony to shoot him anyway. If he was a truly dedicated communist, he might be willing to sacrifice his life. But that would achieve nothing, for Billie would still have the blueprints, and they told the whole story.
Slowly, Anthony lowered his arms, but he did not drop the gun.
'Drop it, or I'll shoot!'
Anthony gave his twisted smile again. 'No, you won't,' he said. 'Not in cold blood.' Still pointing the gun at the floor, he began to walk backwards, making for the open door that led into the laboratory. Luke remembered noticing a door there that looked as if it led to the outside.
'Stop!' Billie cried.
'You don't believe that a rocket is worth more than a human life, even if it's a traitor's life,' Anthony said, continuing to walk backward. He was now two steps from the door.
'Don't test me!' she cried.
Luke stared at her, not knowing whether she would shoot or not.
Anthony turned and darted through the doorway.
Billie did not shoot.
Anthony leaped over a lab bench, then threw himself at a double door. It burst open, and he disappeared into the night Luke leaped to his feet Billie came towards him with her arms wide. He looked at the clock on the wall. It said ten twenty-nine. He had a minute left to warn Cape Canaveral.
He turned away from Billie and picked up the phone.
.
10.29 P. M.
The scientific instruments on board the satellite have been designed to withstand take-off pressure of more than 100 gravities.
When the phone was picked up in the blockhouse, Luke said: 'This is Luke, give me the launch conductor.'
'Right now he's-'
'I know what he's doing! Put him on, quick!'
There was a pause. In the background, Luke could hear the countdown: 'Twenty, nineteen, eighteen-'
A new voice came on the line, tense and impatient 'This is Willy - what the hell is it?'
'Someone has the self-destruct code.'
