Choking and sick, Alex staggered to his feet just as the fork-lift truck bore down on him a second time. He turned and ran. The guard looked almost ridiculous, hunched up in the tiny cabin. But the machine he was driving was fast, powerful and incredibly flexible, spinning a full circle on a ten pence piece. Alex tried changing direction, sprinting to one side. The truck spun round and followed. Could he make it back to the raised platform? No. Alex knew it was too far away.

Now the guard reached out and pressed a button. The metal forks shuddered and dropped down so that they were less like horns, more like the twin swords of some nightmare medieval knight. Which way should he dive? Left or right? Alex just had time to make up his mind before the truck was on him. He dived to the right, rolling over and over on the concrete. The guard pulled the joystick and the machine spun round again. Alex twisted and the heavy wheels missed him by barely a centimetre, then crashed into one of the pillars. There was a pause. Alex got up, his head spinning. For a brief second, he hoped that the collision might have knocked the guard out, but with a sick feeling in his stomach he saw the man step out of the cabin, brushing a little dust off the arm of his jacket. He was moving with the slow confidence of a man who knew that he was in total command. And Alex could already see why. Automatically, the guard had taken the stance of a martial arts expert; feet slightly apart, centre of gravity low. His hands were curving in the air, waiting to strike. He was still smiling. All he could see was a defenceless boy-and one already weakened by two encounters with the fork-lift truck.

With a sudden cry, he lashed out, his right hand slicing towards Alex’s throat. If the blow had made contact, Alex would have been killed. But at the last second he brought up both his fists, crossing his arms to form a block. The guard was taken by surprise and Alex took advantage of the moment to kick out with his right foot, aiming for the groin. But the guard was no longer there, having swivelled to one side, and in that moment Alex knew he was up against a fighter who was stronger, faster and more experienced than him and that he really didn’t have a chance.

The guard swung round, and this time the back of his hand caught Alex on the side of his head. Alex heard the crack. For a moment he was blinded. He reeled backwards, crashing into a metal surface. It was the door of one of the fridges. Somehow he caught hold of the handle and as he stumbled forward, the door opened. He felt a blast of cold across the back of his neck and perhaps that was what revived him and gave him the strength to throw himself forward, ducking underneath another vicious kick that had been aimed at his throat.

Alex was in a bad way and he knew it. His nose was bleeding. He could feel the warm blood trickling down over the corner of his mouth. His head was spinning and the electric light bulbs seemed to be flashing in front of his eyes. But the guard wasn’t even breathing heavily. For the first time, Alex wondered what it was that he had stumbled onto. What could be so important to the guard that he would be ready to murder a fourteen-year-old boy in cold blood, without even asking questions? Alex wiped the blood away from his mouth and cursed Crawley for coming to him on the football pitch, cursed himself for listening. A front row seat at Wimbledon? At Wimbledon cemetery, perhaps. The guard started walking towards him. Alex tensed himself, then dived out of the way, avoiding a lethal double strike of foot and fist. He landed next to a dustbin, overflowing with rubbish. Using all his strength, he picked it up and threw it, grinning through gritted teeth as the bin crashed into his attacker, spilling rotting food all over him. The guard swore and stumbled backwards. Alex ran round the back of the fridge, trying to catch his breath, searching for a way out.

He had only seconds to spare. He knew that the guard would be coming after him and next time he would finish it. He’d had enough. Alex looked left and right. He saw the cylinders of compressed gas and dragged one out of its wire frame. The cylinder seemed to weigh a ton but Alex was desperate. He wrenched the tap on and heard the gas jetting out. Then, holding the cylinder in front of him with both hands, he stepped forward. At that moment, the guard appeared round the side of the fridge. Alex jerked forward, his muscles screaming, shoving the cylinder into the man’s face. The gas exploded into the man’s eyes, temporarily blinding him. Alex brought the cylinder down, then up again. The metal rim clanged into the guard’s head, just above his nose. Alex felt the jolt of solid steel against bone. The guard reeled back. Alex took another step forward. This time he swung the cylinder like a cricket bat, hitting the man with incredible force in the shoulders and neck. The guard never had a chance. He didn’t even cry out as he was thrown off his feet and sent hurtling forward into the open fridge.

Alex dropped the cylinder and groaned. It felt as if his arms had been wrenched out of their sockets. His head was still spinning and he wondered if his nose had been broken. He limped forward and looked into the fridge.

There was a curtain of plastic sheets and behind it a mountain of cardboard boxes, each and every one of them filled to the brim with strawberries. Alex couldn’t help smiling. Strawberries and cream was one of Wimbledon ’s greatest traditions, served at crazy prices in the kiosks and restaurants above ground. This was where they were stored. The guard had landed in the middle of the boxes, crushing many of them. He was unconscious, half buried in a blanket of strawberries, his head resting on a bright red pillow of them. Alex stood in the doorway, leaning on the frame for support, allowing the cold air to wash over him. There was a thermostat next to him. Outside, the weather was hot. The strawberries had to be kept chilled. He took one last look at the man who had tried to kill him. “Out cold,” he said.

Then he reached out and twisted the thermostat control, sending the temperature down below zero. Out colder. He closed the fridge door and limped painfully away.

THE CRIBBER

It had taken the engineer just a few minutes to take the water dispenser apart. Now he reached inside and carefully disengaged a slim glass phial from a tangle of wires and circuit boards.

“Built into the filter,” he said. “There’s a valve system. Very ingenious.”

He passed the phial to a stern-looking woman who held it up to the light, examining its contents. The phial was half filled with a transparent liquid. She swilled it round, applied a little to her index finger and sniffed it. Her eyes narrowed. “Librium,” she announced. She had a clipped, matter-of-fact way of speaking. “Nasty little drug. A spoonful will put you out cold. A couple of drops, though… they’ll just confuse you. Basically knock you off balance.”

The restaurant, and indeed the entire Millennium Building, had been closed for the night. There were three other men there. John Crawley was one. Next to him stood a uniformed policeman, obviously senior. The third man was white-haired and serious, wearing a Wimbledon tie. Alex was sitting to one side, feeling suddenly tired and out of place. Nobody apart from Crawley knew that he worked for MI6. As far as they were concerned, he was just a ballboy who had somehow stumbled on the truth.

Alex was dressed in his own clothes now. He had phoned Crawley, then taken a shower and changed, leaving his ballboy uniform back in his locker. Somehow he knew that he had worn it for the last time. He wondered if he would be allowed to keep the shorts, shirt and Hi-Tec trainers with the crossed racquets logo embroidered on the tongue. The uniform is the only payment Wimbledon ballboys and girls receive.