For the training flights, a couple of ordinary civil aircraft seats had been fixed inside the roomy fuselage just back of the large cockpit, and Petacchi sat quietly for a whole hour and watched the five men at work at the crowded dials and instruments. When it came to his turn to fly the plane he was quite satisfied that he could dispense with all five of them. Once he had set George, there would be nothing to do but stay awake and make certain from time to time that he was keeping exactly at 32,000 feet, just above the transatlantic air channel. There would be a tricky moment when he turned off the east-west channel on to the North-South for the Bahamas, but this had all been worked out for him and every move he would have to make was written down in the notebook in his breast pocket. The landing was going to need very steady nerves, but for $1,000,000 the steady nerves would be summoned.
For the tenth time Petacchi consulted the Rolex. Now! He verified and tested the oxygen mask in the bulkhead beside him and laid it down ready. Next he took the little red-ringed cylinder out of his pocket and remembered exactly how many turns to give the release valve. Then he put it back in his pocket and went through into the cockpit.
“Hullo, Seppy. Enjoying the flight?” The pilot liked the Italian. They had gone out together on one or two majestic thrashes in Bournemouth.
“Sure, sure.” Petacchi asked some questions, verified the course set on George, checked the air speed and altitude. Now everyone in the cockpit was relaxed, almost drowsy. Five more hours to go. Rather a bind missing North by Northwest at the Odeon. But one would catch up with it at Southampton. Petacchi stood with his back to the metal map rack that held the log and the charts. His right hand went to his pocket, felt for the release valve, and gave it three complete turns. He eased the cylinder out of his pocket and slipped it behind him and down behind the books.
Petacchi stretched and yawned. “Is time for a zizz,” he said amiably. He had got the slang phrase pat. It rolled easily off the tongue.
The navigator laughed. “What do they call it in Italian—Zizzo?”
Petacchi grinned cheerfully. He went through the open hatch, got back to his chair, clamped on his oxygen mask, and turned the control regulator to 100 per cent oxygen to cut out the air bleed. Then he made himself comfortable and watched.
They had said it would take under five minutes. Sure enough, in about two minutes, the man nearest to the map rack, the navigator, suddenly clutched his throat and fell forward, gargling horribly. The radio operator dropped his earphones and started forward, but with his second step he was down on his knees. He lurched sideways and collapsed. Now the three other men began to fight for air, briefly, terribly. The co-pilot and the flight engineer writhed off their stools together. They clawed vaguely at each other and then fell back, spread-eagled. The pilot groped up toward the microphone above his head, said something indistinctly, got half to his feet, turned slowly so that his bulging eyes, already dead, seemed to stare through the hatchway into Petacchi’s, and then thudded down on top of the body of his co-pilot.
Petacchi glanced at his watch. Four minutes flat. Give them one more minute. When the minute was up, he took rubber gloves out of his pocket, put them on, and, pressing the oxygen mask tight against his face and trailing the flexible tube behind him, went forward, reached down into the map rack, and closed the valve on the cylinder of cyanide. He verified George and adjusted the cabin pressurization to help clear the poison gas. He then went back to his seat to wait for fifteen minutes.
They had said fifteen would be enough, but at the last moment he gave it another ten and then, still with his oxygen mask on, he went forward again and began slowly, for the oxygen made him rather breathless, to pull the bodies back into the fuselage. When the cockpit was clear, he took a small phial of crystals out of his trousers pocket, took out the cork, and sprinkled the cabin floor with them. He went down on his knees and watched the crystals. They kept their white color. He eased his oxygen mask away and took a small cautious sniff. There was no smell. But still, when he took over the controls and began easing the plane down to 32,000 and then slightly northwest-by-west to get into the traffic lane, he kept the mask on.