Oswin stands six feet tall and has the youthful, handsome face Mary remembers from their courtship, though his life should have marked him more plainly. Pale and straight-haired, he wears his blond hair tucked under a flat cap. He takes up more room than his lean frame seems to warrant, shoulders squared as if bracing against a gale; when waiting, he plants his weight evenly and goes so still that people sometimes mistake him for a carved post. His movements are economical until something startles him, when his head snaps toward it with a hound's suddenness. He smells faintly of lanolin, damp earth, and cold smoke. Unexpectedly for a sheep farmer, he keeps a tiny, carefully tended patch of purple flowers beside the kitchen door, and knows each one by name.

Oswin is kind in the steady, practical way of someone who will mend a gate before offering comfort, yet he can turn frighteningly ruthless when his family is threatened. He is shrewd about land, weather, and people, but naïve about the damage his concealment does to those he loves. In company he is wry and unassuming; alone at night he is restless and full of old roads.

Oswin Hirst was born in a dale that had not yet learned to call itself English. His mother was human, a farmer’s daughter who had survived the passage of Viking raiders through her valley. The raiders left behind broken doors, missing livestock, and a child whose father was never named. Oswin’s mother gave him her own family name and raised him among people who had more pressing matters than asking why the boy’s eyes shone blue in certain light. His first memories are small and ordinary: the warmth of a hearthstone, his mother’s hands knotting wool, rain tapping the roof while she sang in a tongue that sounded old even then. She died while he was still a child. Afterward, the neighbors took turns feeding him and watching over him, at first from kindness and later from unease. Oswin grew, but not at the pace they expected. Boys who had once fought him in the lane became fathers, then grandfathers, while he remained a young man with the same bright eyes. Some called him blessed. Others crossed themselves or muttered that his mother had taken a strange lover. Oswin learned that gratitude and fear could live in the same face. He had a gift for languages, or perhaps simply a need to listen. He learned Old Norse from the words left behind by the raiders and Anglo-Saxon from the people who raised him. Later he picked up scraps of speech wherever he wandered: traders’ phrases, prayers, insults, and the names people used when they hoped no one else was listening. There were other languages too, ones he was warned against. He learned the bargaining speech of devils, the muttered words of witches, and the quick, bright talk of the fair folk. He never became careless with any of them. A word might open a door, but it could also make someone on the other side remember your name. For centuries, Oswin moved between settlements, staying long enough to earn a place and leaving when questions began to gather. He worked as a shepherd, a drover, a laborer, and once as a guide for travelers who had lost their way in weather that seemed determined to keep them lost. He learned the habits of land and sky. He could tell when a river would rise, which slope would hold snow, and when a man’s pleasant offer concealed a threat. He also learned to recognize the places where the world thinned. Beyond those boundaries he met beings who were neither quite neighbors nor quite enemies. Some became uneasy friends. A few gave him names he has never repeated, even in the privacy of his own thoughts. One of those companions was a northerner Oswin called his brother, though the word meant something different between them. The brother gave him a golden sickle. It was a strange gift, too fine for a farm tool and too sharp for ordinary harvesting. Oswin accepted it without asking all the questions he should have asked. He keeps it hidden and brings it out for tasks he does not explain. When Mary has asked about the locked chest where he stores it, he has answered with a joke or a change of subject. He tells himself that secrecy is safer than truth. He has told himself this for a very long time. Eventually, he wanted something less uncertain than another road. He settled on a sheep farm and built a fine house for a man of his standing. The work suited him. Fences needed mending, lambs needed turning, and weather did not care whether he had lived a hundred years or ten. His neighbors knew him as a capable, wry man who did not boast. He could be generous without making a performance of it, and he preferred fixing a broken gate to offering words of comfort. He was shrewd about land and people, though less shrewd about what his silences did to those who trusted him. Mary Pickles came into his life with a steadiness he admired. He loved her, and he wanted to be the husband she deserved. On their wedding night, the thing he had kept buried beneath habit and careful explanations broke through. In human shape he could not consummate the marriage. Fear and shame pressed in until he became a headless man with burning red eyes. Mary struck him with iron scissors. The blow ended the encounter, but not the memory. Five days later, Oswin asked if they might try again, this time with him as himself. Mary agreed. He never confessed what had happened on the first night, and the secret became the foundation of a marriage he meant to protect. Their son William was born with black hair and Oswin’s burning blue eyes. The family called him Black William, or Blackby. He was slow to learn and often frightened by things other children barely noticed. Fear sometimes turned to anger, sudden and fierce. Oswin tried to meet each difficulty with patience and practical care. He watched the boy closely, made allowances, and hoped time would soften what troubled him. Mary feared something else. She believed William might be the Barguest’s spawn, and she told her father, Thomas Pickles, what had happened on the wedding night. Oswin has never learned the full measure of what Thomas knows, but he sees suspicion in the older man’s looks. Thomas wants him driven from the farm and Mary made to divorce him. Oswin understands why Thomas is afraid, though he resents the judgment and will not surrender his family to it. Mary’s brothers have their own ways of watching him. Hugh is blunt enough to make his mistrust plain. Edward says less, but notices small things: a pause, a locked door, a story that changes in one detail. Oswin finds Edward harder to answer than Hugh. The family’s losses have made every silence heavier. Alice died of a winter fever. Thomas once saw a black hound before her illness, and the sight has stayed with him. Oswin saw something worse when baby Edmund lay dying: hellish eyes where no eyes should have been. Rose is gone as well. He does not know whether these deaths belong to chance, to some old debt, or to the presence that has followed him across too many seasons. He knows only that he cannot bear the thought of another child lost, and that fear makes him more ruthless than he likes to admit. At night, when Mary and William sleep, Oswin walks the house or stands listening to the fields. Certain dates and changes of season pull old roads back into his mind: the sound of hooves on frozen ground, a voice speaking from the far side of a boundary, the names of people who may still remember him. By morning he returns to the sheep and the gates, offering his family the ordinary man they believe they know. He means to keep them safe. He does not understand that every truth he withholds gives their fear more room to grow.