And so on. The outcome was inevitable. And soon the world would be empty of people — empty, save for just one kind.

After he had lost his family the Old Man had fled from the skinnies, heading ever west. But here, in this coastal cave, the Old Man had reached the western shore of Europe, the fringe of the Atlantic. The ocean was an impassable barrier. He had nowhere left to go.

Jahna’s encounter with the Old Man was the last contact of all.

Rood, silhouetted against the sunset, looked dusty, hot. At his side was Olith, Jahna’s aunt. Rood’s eyes were wide, as he took in what he saw in the cave.

For Jahna, it was like snapping awake from a nightmare. She dropped the bit of hide she had been working, ran forward across a cave floor that suddenly seemed filthy and cluttered, and hurled herself into her father’s arms. There she wept like a very small child, while her father’s hands hesitantly patted the crude bonehead wrap she wore.

The bonehead roused. The shadows of the two adults, cast by the setting sun, striped over him. He raised a hand to shield his eyes. Then, bleary with sleep, heavy with meat, he struggled to get to his feet, growling.

Rood pushed the children to Olith, who held them. Then he raised a cobble over the struggling bonehead’s cranium.

Jahna cried, “No!” She struggled free of Olith and grabbed her father’s hand.

Rood stared down at her. And she realized she had a choice to make.

Jahna thought about it for a heartbeat. She remembered the mussels, the seals, the fires she had built. And she looked at the ugly, lumpy brow of the bonehead. She released her father’s arm.

Rood let his arm fall. It was a heavy blow. The bonehead fell forward. But bonehead skulls were thick. It seemed to Jahna that the Old Man could have got up, fought on even now. But he didn’t. He remained in the dirt of his cave, on his hands and knees.

It took four, five blows before Rood had gotten through his skull. Long before the last blow Jahna had turned away.

They stayed in the cave one more night, with the fallen bonehead slumped on the floor, blood pooled beneath his shattered skull. In the morning they wrapped up what was left of the seal meat, and prepared to begin the journey back. But before they left Jahna insisted they dig a hole in the ground, wide but shallow. Into the hole she dropped the bones of the infant she had found, and the big carcass of the bonehead. Then she kicked the dirt back into the hole, and tamped it down with her feet.

After they had gone the gulls came. They pecked at the bits of seal meat, and the patch of dried blood in the entrance of the cave that faced the sea.

The two girls, lying side by side, nibbled at their kernels of wild grain.

“So you like Tori better than Jaypee,” said Sion.

Juna, at sixteen a year younger than her sister, flicked her hair out of her eyes. Her hair was a pale blond, strikingly bright. She said carefully, “Maybe. I think he likes me better than Jaypee does.”

“But you said Tori was a runt. You said you liked the way Jaypee’s hair falls when he runs, and those big thighs he has, and—”

“I know what I said,” Juna said uncomfortably. “But Tori has a better—”

“Cock?”

“A better personality,” Juna forced out.

Sion’s pealing laughter billowed out over the empty space. A dog, slumbering in the shade of the men’s hut, deigned to move one eye to check out the disturbance, then fell back asleep.

The girls were surrounded by the bare, trampled dust of the village. The place was dominated by the great slumped form of the men’s hut, a ramshackle construction of timber and reeds. The women’s huts were smaller satellites of this rude giant. Gravelly snoring from within the men’s hut told the girls that the shaman was sleeping off another hard night of beer and visions. Nobody was moving: not the dogs, not the adults. Most of the men were out hunting; the women were dozing in their huts with their infants. There weren’t even any children around.

Sion sprinkled a little more ground fennel on her grain. The fennel’s aromatic oil was actually a defense evolved by the plant before the death of the dinosaurs, intended to make its leaves too slippery for the legs of boring, nibbling insects; now the result of that ancient evolutionary arms race flavored Sion’s snack. “You are joking,” said Sion. “Juna, I love you dearly. But you are the most shallow person I know. Since when has personality mattered a dried fig to you?”

Juna felt her face burn.

“Ah. There’s something you aren’t telling me.” Sion studied Juna’s face with a hunter’s expert knowledge of her prey. “Have you two lain together? ”

“No,” Juna snapped.

Sion was still suspicious. “I didn’t think Tori was lying with anybody yet. Apart from Acta, of course.” Acta was one of the oldest of the men — not to mention the fattest — but he continued to prove his strength with his wily leadership of the hunts, and so he continued to assert his rights over the boys and young men. “I know Tori’s getting sick of being poked with Acta’s stinking dick; that’s what Jaypee told me! Soon he’s going to want to be with a woman, but not yet—”

Juna couldn’t meet her sister’s eyes — for the truth was, she had lain with Tori, just as Sion suspected. It had been out in the bush, with Tori boastfully full of beer. She didn’t know why she’d let him do it. She hadn’t even been sure he had done it right. She longed to tell her sister everything — how her bleeding had stopped, how she already felt the new life moving inside her — but how could she? Times were hard — times were always hard — and it wasn’t a good time to be producing a baby by a feckless boy. She hadn’t yet told Tori himself. She hadn’t even told her mother, Pepule, who was herself expecting a child. “Sion, I—”

There was a hand on her arm, hot and heavy, a breath redolent with unfamiliar spices. “Hello, girls. Something on your mind?” Juna flinched away, pulling her arm free.

This was Cahl, the beer man. He was a big man, fatter even than Acta, and he wore strangely constraining clothes: a tightly sewn jacket and trousers, heavy leather shoes, a hat stuffed with straw. On his back was a heavy skin full of ale; it sloshed as he squatted down beside them. His skin was cratered, like soil after rain, and his teeth were ugly brown stumps. But his gaze, as he smiled at Juna, had a kind of predator’s intensity.

Sion glared at him. “Why don’t you go back where you came from? Nobody wants you here.”

He frowned briefly, striving to translate what she had said. His language was different from theirs. It was a common speculation that Cahl’s folk had come from somewhere far to the east, bringing their peculiar language with them. “Oh,” he said at last, “plenty of people want me here. Some want me an awful lot. You’d be surprised what people will give me, in return for what I can give them.” And he leered again, showing a mouthful of brown, rotten teeth. “Maybe we should talk about it, you and me,” he said to Juna. “Maybe we should find out what we can do for each other.”

“Keep away from me,” Juna said tremulously.

But Cahl kept on staring at her, a snake’s stare, hard and intense.

It was with relief that she heard the footsteps of the returning men, their bare feet grinding in the dirt. Their naked bodies were caked with dust, and they were obviously weary. Juna saw that once again the dozen men had returned home empty-handed save for a few rabbits and rats; bigger game was very rare.

Old man Acta had his fat arm draped over Tori’s shoulders. Juna didn’t want to meet the slim boy’s gaze, and yet she longed to know what he was thinking. How would he react if she told him what had happened as a result of their foolish fumble?