Forrester jumped from the roof of the car and set off along the beach road towards Ampuriabrava. The immaculate sand ran down to the water, free at last of cigarette-ends and bottle-tops, as clean and soft as milled bone. As he moved past the empty hotels it struck Forrester as strange that he felt no sense of panic at the thought of these vanished people. Like Judith and everyone else he knew, like the old linotype operator and his wife sitting alone in the lobby of their hotel, he calmly accepted the terrifying logic of this reductive nightmare as if it were a wholly natural and peaceful event.

Forty years earlier, by contrast, there had been an uncontrolled epidemic of fear as everyone became aware of the marked fall in the world’s population, the huge apparent drop in the birth-rate and, even more disquieting, the immense increase in the number of deformed foetuses. Whatever had set off this process, which now left Forrester standing alone on this once-crowded Costa Brava beach, the results were dramatic and irreversible. At its present rate of decline Europe’s population of 200,000 people, and the United States’ population of 150,000, were headed for oblivion within a generation.

At the same time, by an unhappy paradox, there had been no fall in fertility, either in man or in the few animal species also affected. In fact, birth-rates had soared, but almost all the offspring were seriously deformed. Forrester remembered the first of Judith’s children, with their defective eyes, in which the optic nerves were exposed, and even more disturbing, their deformed sexual organs — these grim parodies of human genitalia tapped all kinds of nervousness and loathing.

Forrester stopped at the end of the beach, where the line of hotels turned at right angles along the entrance channel of the marina. Looking back at the town, he realized that he was almost certainly its last visitor. The continued breakdown of the European road-systems would soon rule out any future journeys to Spain. For the past five years he and Judith had lived in Geneva. Working for a United Nations agency, he moved from city to city across Europe, in charge of a team making inventories of the huge stockpiles of foodstuffs, pharmaceuticals, consumer durables and industrial raw materials that lay about in warehouses and rail terminals, in empty supermarkets and stalled production-lines — enough merchandise to keep the dwindling population going for a thousand years. Although the population of Geneva was some two thousand, most of Europe’s urban areas were deserted altogether, including, surprisingly, some of its great cathedral cities — Chartres, Cologne and Canterbury were empty shells. For some reason the consolations of religion meant nothing to anyone. On the other hand, despite the initial panic, there had never been any real despair. For thirty years they had been matter-of-factly slaughtering their children and closing down the western hemisphere like a group of circus workers dismantling their tents and killing their animals at the season’s end.

From the bank of the canal Forrester peered up at the white hull of the Club Náutico. There were no signs of the young woman. Behind him, facing the airstrip, was a roadside restaurant abandoned years before. Through the saltstained windows he could see the rows of bottles against the mirror behind the bar, chairs stacked on tables.

Forrester pushed back the door. The interior of the restaurant was like a museum tableau. Nothing had been moved for years. Despite the unlocked door there had been no vandalism. From the footprints visible in the fine sand blown across the floor it was clear that over the years a few passing travellers had refreshed themselves at the bar and left without doing any damage. This was true of everywhere Forrester had visited. They had vacated a hundred cities and airports as if leaving them in serviceable condition for their successors.

The air in the restaurant was stale but cool. Seated behind the bar, Forrester helped himself to a bottle of Fundador, drinking quietly as he waited for the young woman to reappear. As he gazed across the canal he noticed that Gould had painted two continuous marker lines in fluorescent silver across the metal slats and wire railing of the footbridge. From the door he could see the same marker lines crossing the road and climbing the steps to Gould’s hotel, where they disappeared into the lobby.

Standing unsteadily in the road, Forrester frowned up at the garish faade of the hotel, which had been designed in a crudely erotic Graecian style. Naked caryatids three storeys high supported a sham portico emblazoned with satyrs and nymphs. Why had Gould chosen to live in this hotel, out of all those standing empty in Rosas? Here in what amounted to the red-light quarter of the town, it was one of a group known euphemistically all over the world as the ‘Venus hotels’, but which Judith more accurately referred to as ‘the sex-hotels’. From Waikiki to Glyfada Beach, Rio to Recife, these hotel complexes had sprung up in the first years of the depopulation crisis. A flood of governmentsubsidised tourists had poured in, urged on into a last frantic festival of erotomania. In a misguided attempt to rekindle their fertility, every conceivable kind of deviant sexual activity had been encouraged. Pornographic hotel decor, lobbies crammed with aids and appliances, ceaseless sex-films shown on closed-circuit television, all these reflected an unhappy awareness by everyone that their sex no longer mattered. The sense of obligation, however residual, to a future generation was no longer present. If anything, the ‘normal’ had become the real obscenity. In the foyer of one of these hotels Forrester and Judith had come across the most sinister pornographic image of all — the photograph of a healthy baby obscenely retouched.

Judith and her husband had been too young to take part in these despairing orgies, and by the time of their marriage there had been a general revulsion against perverse sex of every kind. Chastity and romantic love, pre-marital celibacy and all the restraints of monogamy came back in force. As the world’s populations continued to fall, the last married couples sat dutifully together like characters from a Vermeer interior.

And all the while the sexual drive continued unabated. Feeling the alcohol surge through him, Forrester swayed through the hot sunlight. Somewhere around the hangar beside the airstrip the young woman was waiting for him, perhaps watching him at this moment from its dark interior. Obviously she knew what he was thinking, and almost seemed to be encouraging him with her flirtatious dartings to and fro.

Forrester stepped on to the bridge. Behind him the line of garish hotels was silent, a stage-set designed for just this adventure. The metal rungs of the bridge rang softly under his feet. Tapping them like the keys of a xylophone, Forrester stumbled against the rail, smearing his hands against the still-wet stripe of silver paint.

Without thinking, he wiped his hands on his shirt. The lines of fluorescent paint continued across the bridge, winding in and out of the abandoned cars in the parking lot beside the airstrip. Following Gould’s illuminated pathway, Forrester crossed the canal. When he reached the fuel store he saw that the young woman had emerged from the hangar. She stood in the open doorway, her feet well within the rectangle of sunlight. Her intelligent but somehow mongoloid face was hidden as usual behind heavy sunglasses — a squat chin and high forehead fronted by a carapace of black glass. For all this concealment, Forrester was certain that she had been expecting him, and even more that she had been hoping for him to appear. Inside her black shawl she was moving her hands about like a schoolgirl — no doubt she was aware that he was the only man in the resort, apart from Gould, away on his endless solo flying, and the old linotype operator.