The attack had come without any warning at all. Sarov’s men had been well armed and prepared. There had only been a handful of sailors at the yard and they had all been asleep. It was over very quickly. The ringing stopped. Smoke curled out of the damaged building. A figure floated past, face down in the water. The harbour had been taken. Sarov was in total command.

The driver got out of the truck, went quickly round the front and opened the door for Alex. He climbed down awkwardly, his hands still chained together. Sarov’s men had moved into the second phase of the operation. Alex saw bodies being carried out of sight. One of the other trucks reversed, moving closer to the water’s edge. The commander from the airport called out an order and the soldiers scattered, taking up positions that they must have worked out months before. It seemed unlikely that anybody would have had time to raise the alarm, but if anyone approached the yard from Murmansk, they would find it defended. Sarov was standing to one side with Conrad beside him. He was looking at something. Alex followed his eyes.

And there were the submarines!

Alex gasped. Here was what this whole thing had been about! There were just four of them, bloated metal beasts that lay half-submerged in the sea, secured by ropes as thick as a man’s arm. Each one was the size of an office building turned on its side. The submarines had no markings whatsoever and no flags. They seemed to be coated in black oil or tar. Their conning towers, set well back, were closed and solid. Alex shivered.

He’d never thought that a machine could actually emanate evil, but these did. They were as dark and as cold as the water that lapped about them. They looked just like the bombs that they had become. Three of the submarines were in a line, moored against the side of the harbour. The fourth was in a bay of its own, a little way out. Alex noticed a crane at the end of a quay, right next to the water. Years ago it might have been painted yellow but most of the colour had flaked off. The control cabin was only about ten metres above the ground with a ladder reaching up to it. The arm of the crane slanted up, then bent down, mimicking the neck and head of a bird. This was a crane with no hook. Instead there was a metal disc like an oversized bath plug dangling underneath the arm, connected to it by a chain and a series of electric cables.

Conrad shouted something and the driver led Alex over to a solid handrail on the edge of the quay. It had obviously been placed there to stop anyone falling in and it was securely bolted to the ground. The driver unlocked one of Alex’s hands then pulled with the chain, leading him like a dog. He walked him over to the handrail and cuffed him to it. Alex was left standing on his own in the middle of everything. He jerked at the chain but it was useless. He wasn’t going anywhere.

Alex could only stand and watch as two of the soldiers lifted the bomb out of the truck as carefully as they could. He saw the strain in their faces as they set it on the ground right next to the edge of the quay and only a few metres from the crane. Sarov walked over, Conrad limping along next to him. Conrad looked at Alex and one corner of his mouth twitched into a smile.

Sarov reached into his jacket pocket and took out the plastic card he had shown Alex on the plane. He held it for a moment, then fed it into the slot on the side of the nuclear bomb. At once, the silver chest came to life. A series of red lights began to blink on a panel. Alex saw a line of digits on a liquid crystal display. Hours, minutes and seconds. They were already counting down. The magnetic stripe on the card had activated the bomb. Somewhere inside the chest, electronic wheels were turning. The detonation sequence had begun.

Then Sarov came over to Alex.

He stood there, examining him as if for the first and last time. As ever, his face gave nothing away, but Alex detected something in the man’s eyes. Sarov would have denied it. He would have been angered if anyone had suggested it. But the sadness was there. It was plain to see.

“And so we come to the end,” he said. “You are standing in the Nuclear Submarine Repair Shipyard of Murmansk. You may be interested to know that the soldiers we met at the airport have all served with me in the past and are loyal to me still. The entire compound is now under my control and as you have seen, the nuclear bomb is primed. I’m afraid I cannot stay with you any longer. I have to return to the airport to ensure that everything is ready for our flight to Moscow. I will leave Conrad to place the bomb in position on the submarine, directly over the nuclear reactor that is still there inside. It is possible that the detonator in the bomb will also trigger the reactor, doubling or trebling the force of the explosion. This will mean very little to you, as you will be vaporized instantly-before your brain has time even to work out what has happened. Conrad is very disappointed. He had hoped I would allow him to kill you himself.”

Alex said nothing.

“I am so sorry, Alex, that in the end you were so much more stupid than I had thought, although perhaps I should have expected it. A Western child, brought up and educated in Britain… a country that is itself only a shadow of what it once was. Why couldn’t you see what I was offering you? Why couldn’t you accept your place in the new world? You could have been my son. You chose to be my enemy. And this is where it has brought you.”

There was another, long silence. Sarov reached out and gently stroked Alex’s cheek. He looked into the boy’s eyes one last time. Then he turned on his heel and walked away. Alex watched him get into his car and drive off.

The other soldiers were a distance away, still in their places around the site. But here at the centre, with the crane, the submarines and the nuclear bomb, Alex and Conrad were on their own. It was as if they had the whole harbour to themselves.

Conrad stepped forward and stopped very close to Alex. “I have a job to do,” he rasped. “But then we will have a little time together. Strange though it is, Sarov still cares about you. He told me to leave you alone. But I think, this time, I must disobey the general. You are mine! And I intend to make you suffer…”

“Just talking to you makes me suffer,” Alex said.

Conrad ignored him. He went over to the crane and climbed the short ladder into the cabin. Alex saw him start up the controls and a moment later the metal disc swung round so that it was over the bomb, then began to descend. Conrad handled the crane expertly. The disc fell quickly, stopped, then gently came into contact with the surface of the chest. Alex heard a loud click and a moment later the chest suddenly swayed and left the ground. Now he understood. The metal disc was a powerful electromagnet. Conrad was operating a magnetic hoist, using it to carry the bomb across the water and deposit it on the submarine. The whole operation would take him about three minutes. Then he would come for Alex.

Alex had run out of time. He had to act now.

The stick of bubblegum that Smithers had given him was in his right pocket. Only his left hand was free and it took him a few precious seconds to get it out, unwrap it and shove it into his mouth. He wondered what Conrad would think if he had seen him. Certainly Sarov wouldn’t have been amused. A Western boy about to face death and all he could think about was gum!

Alex chewed. Smithers had managed to get one part of the formula right. The gum did indeed taste of strawberries. He wondered how long he should leave it in his mouth. His saliva was meant to activate it, but how much saliva did it need? He chewed until the gum felt soft and manageable and the strawberry taste had faded away. Then he spat it into his hand and quickly pressed it into the handcuff, forcing it into the lock.