Margaret Ilsley had spent nineteen years locked behind four iron bars, hidden from the world as a madwoman by the aunt who once saved her life — until a duke on a black horse stopped in the road below her window, looked up, and did not look away.

PART 1

The room was twenty feet by fifteen, and Margaret Ilsley had memorized every inch of it the way other women memorized the faces of their children.

A bed. A washstand. A wardrobe with a door that stuck in wet weather. A table, a single chair, and a window with four iron bars across it, through which the light came in stripes that crawled across the floorboards from morning until they vanished, all at once, at four o’clock.

She was eight-and-twenty years old.

She had been in that room, in one form or another, since she was nine.

It had not begun as a prison. That was the part she was always careful to get right, even in her own head, even after everything — because if she let herself believe it had been cruelty from the first day, she would have to explain the four months her aunt had sat up with her, sleepless, wringing cloths in cold water while a child burned with fever and nearly did not survive it. Prudence Kelsol had saved her life that spring. The whole county had said so. It had been true.

And then Margaret had gotten better, and had not been let out.

Not all at once. That was the thing she had spent years trying to catch — one clean moment where the door had shut and stayed shut — and she had never found it. There had been a spring in which she was still delicate. A summer in which the stairs were thought too much for her. A physician, long since dead, who had said something vague about her lungs, and been believed for three years on the strength of it. By the time she was twelve there was a lock on the outside of her door, and not one person in that house had ever said the word lock out loud.

The bars had come later, and those, at least, had a date.

She had been thirteen. She had gotten as far as the landing — a minute and a half of freedom, the whole of it, before a housemaid saw her and screamed. Not from fright. Margaret understood that now. A housemaid who found Miss Ilsley loose on the stairs was a housemaid who would be dismissed by nightfall.

Her aunt had come up afterward, and had not been angry, and that had somehow been worse. Prudence Kelsol had sat on the edge of the bed with her hands folded and her eyes wet and had said, gently, the way you say something to a child you love:

If you are found on the stairs, they will take you away from me. I have seen the place they put girls like you, Margaret. And I would rather die than let it happen.

She had been thirteen, and she had believed every word of it.

The bars went up within the month. The explanation given to the house was that Miss Ilsley had been found at an open window, and it was for her own safety, and nobody asked a single question, because in that house nobody ever did.

What Prudence Kelsol had never understood — could not have understood, because she had never once opened one of them — was that there were nine hundred books at the end of that corridor. They had belonged to Margaret’s father, a country gentleman who had trained for the law and never practiced it, and who had died when she was seven. Somebody, in that second year, when the child was still delicate and would not go down, had said she might have something to read.

Nobody had thought about what.

Margaret Ilsley had read every one of those nine hundred books. Most of them four times over. She had read Blackstone’s Commentaries at fifteen for no better reason than that it was the only thing left on the shelf that week, and had gotten nine pages in, and stopped, because it was dull and had no story in it.

She went back at sixteen. Further at eighteen. And at three-and-twenty, on a wet autumn afternoon, she had come to a single sentence about the guardianship of infants — the age at which it determined, by the ordinary law of England — and had put the book down on her knees and sat entirely still for a quarter of an hour, because she had just understood, with the calm of someone watching a house catch fire two streets away, that she had been one-and-twenty for two years.

That her aunt’s authority over her had ended when she turned one-and-twenty.

That there was, in the whole of England, not one piece of paper giving Prudence Kelsol any right to keep her in this room at all.

She had spent the five years since working out what to do with that knowledge, and had arrived, again and again, at the same wall. There is nothing holding me here except that nobody outside this house knows I am a grown woman. And I cannot tell anybody, because there is nobody to tell.

Four people. That was the whole of Margaret Ilsley’s world. Her aunt, twice a day. A housemaid named Susan Row who brought the trays and never once looked at her. A girl who did the fires in winter. A man who came twice a year to look at the chimney and had never spoken to her at all.

It was the last week of July, and she was at the window, because she was always at the window between four and six — the only hour the road below was worth watching.

She knew that road better than any living soul knew anything. She knew the carters by their horses. She had watched a boy grow from eight to fifteen out there and never once heard his voice.

A man came up the road on a black horse, at a walk.

She thought nothing of it. She had watched perhaps four hundred men on horses in nineteen years.

Then he stopped.

He stopped about forty feet from the house, and he was not looking at the house. He was looking up, directly, at her window — and Margaret Ilsley’s whole body went still, because she understood, with a shock that went through her like cold water, exactly what he was looking at.

The bars.

His eyes came down a foot, and found her face.

Neither of them moved.