Scorpia

almost at once, he saw that he had a problem. The city of Venice had been built on over a hundred islands. Mr Grey had explained this on their first day. In the Middle Ages the area had been little more than a swamp. That was why there were no roads – just waterways and oddly shaped bits of land connected by bridges. The woman was on the water; Alex was on the land. Following her would be like trying to find his way through an impossible mazein which their paths would never meet.
    Already he had lost her. The alleyway he had taken should have continued straight ahead. Instead it suddenly veered off at an angle, obstructed by a tall block of flats. He ran round the corner, watched by two Italian women in black dresses, sitting outside on wooden stools. There was a canal ahead of him, but it was empty. A flight of heavy stone steps led down to the murky water but there was no way forward … unless he wanted to swim.
    He peered to the left and was rewarded with a glimpse of wood and water churned up by the propellers of the motor launch as it passed a fleet of gondolas roped together beside a rotting jetty. There was the woman, still sitting in the stern, now sipping a glass of wine. The boat continued under a bridge so tiny there was barely room to pass.
    There was only one thing he could do. He swivelled round and retraced his steps, running as fast as he could. The two women noticed him again and shook their heads disapprovingly. He hadn’t realized how hot it was. The sun seemed to be trapped in the narrow streets, and even in the shadows the heat lingered. Already sweating, he burst back out onto the street where he had begun. Fortunately there was no sign of Mr Grey or the rest of the school party.
    Which way?
    Suddenly every street and every corner looked the same. Relying on his sense of direction, Alex chose left and sprinted past a fruit shop, a candle shop and an open-air restaurant where the waiters were already laying the tables for lunch. He came to a bend and there was the bridge – so short he could cross it in five steps. He stopped in the middle and leant over the edge, gazing down the canal. The smell of stagnant water pricked his nostrils. There was nothing. The launch had gone.
    But he knew which way it had been heading. It still wasn’t too late – if he could keep moving. He darted on. A Japanese tourist was just about to take a photo of his wife and daughter. Alex heard the camera shutter click as he ran between them. When they got back to Tokyo, they would have a picture of a slim, athletic boy with fair hair hanging over his forehead, dressed in shorts and a Billabong T-shirt, with sweat pouring down his face and determination in his eyes. Something to remember him by.
    A crowd of tourists. A busker playing the guitar. Another café. Waiters with silver trays. Alex ploughed through them all, ignoring the shouts of protest hurled after him. Now there was no sign of water anywhere; the street seemed to go on for ever. But he knew there must be a canal somewhere ahead.
    He found it. The road fell away. Grey water flowed past. He had reached the Grand Canal, thelargest waterway in Venice. And there was the motor launch with the silver scorpion now fully visible. It was at least thirty metres away, surrounded by other vessels, and moving further into the distance with every second that passed.
    Alex knew that if he lost it now he wouldn’t find it again. There were too many channels opening up on both sides that it could take. It could slip into the private mooring of one of the palaces or stop at any of the smart hotels. He noticed a wooden platform floating on the water just ahead of him and realized it was one of the landing stages for the Venice water buses. There was a kiosk selling tickets, and a mass of people milling about. A yellow sign gave the name of this point on the canal: SANTA MARIA DEL GIGLIO. A large, crowded boat was just pulling out. A number one bus. His school party had taken an identical boat from the main railway station the day they had arrived, and Alex knew that it travelled the full length of the canal. It was moving quickly. Already a couple of metres separated it from the landing stage.
    Alex glanced back. There was no chance he would be able to find his way through the labyrinth of streets in pursuit of the motor launch. The vaporetto was his only hope. But it was too far away. He had missed it and there might not be another one for at least ten minutes. A