It was still dark when de Lisle collected him and Turner had to ask the night porter to unlock the hotel door. The street was cold, friendless and deserted; the mist came at them in sudden patches.

'We'll have to go the long way over the bridge. The ferry's not running at this hour.' His manner was short to the point of abruptness.

They had entered the carriageway. To either side of them, new blocks, built of tile and armoured glass, sprang like night weeds out of the untilled fields, crested by the lamps of small cranes. They passed the Embassy. The dark hung upon the wet concrete like the smoke of a spent battle. The Union Jack swung limply from its standard, a single flower on a soldier's grave. Under the weary light of the front porch, the lion and the unicorn, their profiles blurred with repeated coats of red and gold, fought bravely on. In the waste land, the two rickety goalposts leaned drunkenly in the twilight.

'Things are warming up in Brussels,' de Lisle remarked in a tone which promised little elaboration. A dozen cars were parked in the forecourt, Bradfield's white Jaguar stood in its private bay.

'For us or against us?'

'What do you think?' He continued: 'We have asked for private talks with the Germans; the French have done the same.

Not that they want them; it's the tug-of-war they enjoy.'

'Who wins?'

De Lisle did not reply.

The deserted town hung in the pink unearthly glow which cradles every city in the hour before dawn. The streets were wet and empty, the houses soiled like old uniforms. At the University arch, three policemen had made a lane of barricades and they flagged them down as they approached. Sullenly they walked round the small car, recording the licence number, testing the suspension by standing on the rear bumper, peering through the misted windscreen at the huddled occupants within.

'What was that they shouted?' Turner asked as they drove on.

'Look out for the one-way signs.' He turned left, following the blue arrow. 'Where the hell are they taking us?'

An electric van was scrubbing the gutter; two more policemen in greatcoats of green leather, their peak caps bent, suspiciously surveyed its progress. In a shop window a young girl was fitting beach clothes to a model, holding one plastic arm and feeding the sleeve a long it. She wore boots of heavy felt and shuffled like a prisoner. They were in the station square. Black banners stretched across the road and a long the awning of the station. 'Welcome to Klaus Karfeld!' 'A hunter's greeting, Klaus!' 'Karfeld! You stand for our self-respect!' A photograph, larger than any which Turner had so far seen, was raised on a massive new hoarding. 'Freitag !' said the legend. Friday. The floodlights shone upon the world and left the face in darkness.

'They're arriving today. Tilsit, Meyer-Lothringen; Karfeld. They're coming down from Hanover to prepare the ground.'

'With Ludwig Siebkron playing host.'

They were running a long some tramlines, still following the diversion signs. The route took them left and right again. They had passed under a small bridge, doubled back, entered another square, halted at some improvised traffic lights and suddenly they were both sitting forward in their cramped seats, staring ahead of them in astonishment, up the gentle slope of the market place towards the Town Hall.

Immediately before them, the empty stalls stood in lines like beds in a barrack hut. Beyond the stalls, the gingerbread houses offered their jagged gables to the lightening sky. But de Lisle and Turner were looking up the hill at the single pink and grey building which dominated the whole square. Ladders had been laid against it; the balcony was festooned in swathes of black; a flock of Mercedes were parked before it on the cobble. To its left, in front of a chemist's shop, floodlit from a dozen places, rose a white scaffolding like the outline of a medieval storming tower. The pinnacle reached as high as the dormer windows of the adjacent building; the giant legs, naked as roots grown in the dark, splayed obscenely over their own black shadows. Workmen were already swarming at its base. Turner could hear the piping echo of hammers and the whine of powered saws. A stack of timber struggled upwards on a silent pulley.

'Why are the flags at half mast?'

'Mourning. It's a gimmick. They're in mourning for national honour.'

They crossed the long bridge. 'That's better,' said de Lisle with a small grunt of satisfaction, and pushed down his collar as if he had entered a warmer world.

He was driving very fast. They passed a village and another.

Soon they had entered the country and were following a new road a long the eastern bank. To their right the tor of Godesberg, divided by tiers of mist, stood grimly over the sleeping town. They skirted the vineyard. The furrows, picked out by the mysterious darkness, were like seams stitched to the zig-zag patterns of the staves. Above the vineyard, the forests of the Seven Hills; above the forests, broken castles and Gothic follies black against the skyline. Abandoning the main road, they entered a short avenue which led directly to an esplanade bordered by unlit lamps and pollarded trees. Beyond it lay the Rhine, smouldering and undefined.

'Next on the left,' de Lisle said tersely. 'Tell me if there's anyone on guard.'

A large white house loomed before them. The lower windows were shuttered, the front gates open. Turner left the car and walked a short way a long the pavement. Picking up a stone, he flung it hard and accurately against the side of the house. The sound echoed crookedly across the water, and upwards towards the black slopes of the Petersberg. Scanning the mist, they waited for a cry or a footstep. There was none. 'Park up the road and come back,' said Turner.

'I think I'll just park up the road. How long will you need?'

'You know the house. Come and help me.'

'Not my form. Sorry. I don't mind bringing you but I'm not coming in.'

'Then why bring me?'

De Lisle did not reply.

'Don't dirty your fingers, will you.'

Keeping to the grass verge, Turner followed the drive towards the house. Even by that light, he was conscious of the same sense of order which had characterised Harting's room. The long lawn was very tidy, the rose beds trimmed and weeded, the roses ringed with grass-cuttings and separately labelled with metal tags. At the kitchen door, three dustbins, numbered and licensed according to the local regulation, stood in a concrete bay. About to insert the key, he heard a footstep.

It was unmistakably a footstep. It had the double imprint, slurred yet infallibly human, of a heel falling on gravel and the toe immediately following. A cautious footstep perhaps; a gesture half made and then withheld, a message sent and revoked; but beyond all argument a footstep.

'Peter?' He's changed his mind again, he thought. He's being soft hearted. 'Peter!'

There was still no answer.

'Peter, is that you?' He stooped, quickly picked up an empty bottle from the wooden crate beside him and waited, his ears tuned to the lightest sound. He heard the crowing of a cock in the Seven Hills. He heard the prickling of the sodden earth, like the tingling of pine needles in a wood; he heard the rustling of tiny waves a long the river's shore; he heard the distant throbbing of the Rhine itself, like the turning of an unearthly machine, one tone made of many, breaking and joining like the unseen water; he heard the mutter of hidden barges, the shoot of anchor chains suddenly released; he heard a cry, like the lowing of lost cattle on a moor, as a lonely siren echoed on the cliff face. But he did not hear another footstep, nor the comfortable tones of de Lisle's courteous voice. Turning the key he pushed open the door, hard; then stood still and listened again, the bottle rigid in his hand, while the faint aroma of stale cigar rose lovingly to his nostrils.

He waited, letting the room come to him out of the cold gloom. Gradually, the new sounds began. First from the direction of the serving hatch came the chink of glass; from the hall, the creak of wood; in the cellar, a hollow box was dragged over a concrete floor; a gong rang, one tone, imperious and distinctive; and from everywhere now, all about him there rose a vibrant, organic hum, obscure yet very close, pressing upon him, louder with every minute, as if the whole building had been struck with a flat hand and were trembling from the blow. Running to the hall, he charged in to the dining-room, put on the lights with a single sweeping movement of his palm and glared savagely round him, shoulders hunched, bottle clenched in his considerable fist.

'Harting!' he shouted now. 'Harting?' He heard the shuffle of scattering feet, and thrust back the partition door. 'Harting!' he called again, but his only answer was the soot slipping in the open hearth, and the banging of an errant shutter on the poor stucco outside. He went to the window and looked across the lawn towards the river. On the far bank, the American Embassy, brilliant as a power house, drove yellow shafts through the mist deep in to the elusive water. Then at last he recognised the nature of his tormentor: a chain of six barges, flags flying, radar-lights glittering above them like the blue stars nailed to the mast, was swiftly disappearing in to the fog. As the last vessel vanished, so the strange domestic orchestra put aside its instruments. The glass ceased to chime, the stairs to creak, the soot to fall, the walls to tremble. The house settled again, ruminative but not yet reassured, waiting for the next assault.

Putting the bottle on the window sill, Turner straightened himself and walked slowly from room to room. It was a wasteful, thinly built barrack of a place, built for a colonel out of reparation costs, at a time when the High Commission was stationed on the Petersberg; one of a colony, de Lisle had said, but the colony was never completed, for by then the Occupation had ended and the project was abandoned. A leftover house for a left-over man. It had a light side and a dark side according to whether the rooms looked on to the river or the Petersberg; the plaster was rough and belonged out of doors. The furniture was equivocal, as if no one had ever decided how much prestige Harting was entitled to. If there was emphasis, it fell upon the gramophone. Flexes ran from it in all directions and speakers to either side of the chimney had been set upon pivots to assist directional adjustment.

The dining table was laid for two.

At the centre, four porcelain cherubs danced in a circle. Spring pursued Summer, Summer recoiled from Autumn, Winter drew them all forward. To either side, two places were set for dinner. Fresh candles, matches, a bottle of Burgundy, unopened, in the wine basket; a cluster of roses