In a way, I was sorry Eric was coming back. I had been thinking of having a War shortly, maybe in the next week or so, but with Eric probably going to make an appearance I had decided against it. I hadn't had a good War for months; the last one had been the Ordinary Soldiers versus the Aerosols. In that scenario, all the 72nd-scale armies, complete with their tanks and guns and trucks and stores and helicopters and boats, had to unite against the Aerosol Invasion. The Aerosols were almost impossible to stop, and the soldiers and their weapons and equipment were getting burned and melted all over the place until one brave soldier who had clung on to one of the Aerosols as it flew back to its base came back (after many adventures) with the news that their base was a breadboard moored under an overhang on an inland creek. A combined force of commandos got there just in time and blew the base to smithereens, finally blowing up the overhang on top of the smoking remains. A good War, with all the right ingredients and a more spectacular ending than most (I even had my father asking me what all the explosions and the fire had been about, when I got back to the house that evening), but too long ago.

Anyway, with Eric on his way, I didn't think it would be a good idea to start another War only to have to abandon it in the middle of things and start dealing with the real world. I decided I would postpone hostilities for a while. Instead, after I had anointed a few of the more important Poles with precious substances, I built a dam system.

When I was younger I used to have fantasies about saving the house by building a dam. There would be a fire in the grass on the dunes, or a plane would have crashed, and all that stopped the cordite in the cellar from going up would be me diverting some of the water from a dam system down a channel and into the house. At one time my major ambition was to have my father buy me an excavator so that I could make really big dams. But I have a far more sophisticated, even metaphysical, approach to dam-building now. I realise that you can never really win against the water; it will always triumph in the end, seeping and soaking and building up and undermining and overflowing. All you can really do is construct something that will divert it or block its way for a while; persuade it to do something it doesn't really want to do. The pleasure comes from the elegance of the compromise you strike between where the water wants to go (guided by gravity and the medium it's moving over) and what you want to do with it.

Actually, I think that life has few pleasures to compare with dam-building. Give me a good broad beach with a reasonable slope and not too much seaweed, and a fair-sized stream, and I'll be happy all day, any day.

By that time the sun was well up, and I took off my jacket to lay it with my bags and binoculars. Stoutstroke dipped and bit and sliced and dug, building a huge triple-deck dam, the main section of which backed up the water in the North Burn for eighty paces; not far off the record for the position I had chosen. I used my usual metal overflow piece, which I keep hidden in the dunes near the best dam-building site, and the piece de resistance was an aqueduct bottomed with an old black plastic rubbish-bag I'd found in the driftwood. The aqueduct carried the overflow stream over three sections of a by-pass channel I'd cut from further up the dam. I built a little village downstream from the dam, complete with roads and a bridge over the remnant of the burn, and a church.

Bursting a good big dam, or even just letting it overflow, is almost as satisfying as planning and building it in the first place. I used little shells to represent the people in the town, as usual. Also as usual, none of the shells survived the flood when the dam burst; they all sank, which meant that everybody died.

By that time I was very hungry, my arms were getting sore and my hands were red with gripping the spade and digging into the sand by themselves. I watched the first flood of water race down to the sea, muddy and littered, then turned to head for home.

"Did I hear you talking on the phone last night?" my father said.

I shook my head. "Nope."

We were finishing our lunch, sitting in the kitchen, me with my stew, my father with brown rice and seaweed salad. He had his Town Gear on; brown brogues, brown tweed three-piece suit, and on the table sat his brown cap. I checked my watch and saw that it was Thursday. It was very unusual for him to go anywhere on a Thursday, whether Porteneil or any further afield. I wasn't going to ask him where he was going because he'd only lie. When I used to ask him where he was going he would tell me "To Phucke', which he claimed was a small town to the north of Inverness. It was years and a lot of funny looks in the town before I learned the truth.

"I'm going out today," he told me between mouthfuls of rice and salad. I nodded, and he continued: "I'll be back late." Perhaps he was going to Porteneil to get drunk in the Rock Hotel, or perhaps he was off to Inverness, where he often goes on business he prefers to keep mysterious, but I suspected that it was really something to do with Eric.

"Right," I said.

"I'll take a key, so you can lock up when you want to." He clattered his knife and fork down on the empty plate and wiped his mouth on a brown napkin made from recycled paper. "Just don't put all the bolts on, all right?"

"Right."

"You'll make yourself something to eat this evening, h'm?"

I nodded again, not looking up as I ate.

"And you'll do the washing-up?"

I nodded again.

"I don't think Diggs'll come round again; but, if he does, I want you to stay out of his way."

"Don't worry," I told him, and sighed.

"You'll be all right, then?" he said, standing.

"M'm-h'm," I said, cleaning up the last of the stew.

"I'll be off, then."

I looked up in time to see him place his cap on his head and look round the kitchen, patting his pockets as he did so. He looked at me again and nodded.

I said: "Goodbye."

"Yes," he said. "Right you are."

"I'll see you later."

"Yes." He turned round, then turned back, looked once more round the room, then shook his head quickly and went to the door, taking his stick from the corner by the washing machine on his way out. I heard the outer door slam, then silence. I sighed.

I waited a minute or so then got up, leaving my almost clean plate, and went through the house to the lounge, where I could see the path leading away through the dunes towards the bridge. My father was walking along it, head bowed, going quickly with a sort of anxious swagger as he swung the stick. As I watched, he struck out with it at some wild flowers growing by the path-side.

I ran upstairs, pausing by the back stairwell window to watch my father disappear round the dune before the bridge, ran up the stairs, got to the door to the study and twisted the handle briskly. The door was firm; it didn't shift a millimetre. One day he'd forget, I was sure, but not today.

After I had finished my meal and done the washing-up, I went to my room, checked the home-brew and got my air-rifle. I made sure I had sufficient pellets in my jacket pockets, then headed out of the house for the Rabbit Grounds on the mainland, between the large branch of the creek and the town dump.

I don't like using the gun; it's almost too accurate for me. The catapult is an Inside thing, requiring that you and it are one. If you're feeling bad, you'll miss; or, if you know you're doing something wrong, you'll miss, too. Unless you fire a gun from the hip it's all Outside; you point and aim and that's it, unless the sights are out or there's a really high wind. Once you've cocked the gun the power's all there, just waiting to be released by the squeeze of a finger. A catapult lives with you until the last moment; it stays tensed in your hands, breathing with you, moving with you, ready to leap, ready to sing and jerk, and leaving you in that dramatic pose, arms and hands outstretched while you wait for the dark curve of the ball in its flight to find its target, that delicious thud.