The heat in Mississippi does not simply sit upon you. It enters you. It finds the spaces between your ribs and fills them with wet wool. I sat at my clinic desk in the town of Fontenot, Louisiana—yes, Louisiana, though the heat knows no state lines—and watched the ceiling fan turn its slow, groaning circles. The blades were warped, and each rotation made a sound like a bone shifting in its socket. Outside, a dog barked. Then stopped. Then barked again. The rhythm of a place that has forgotten what it is afraid of and is afraid of forgetting.

Sarah Boudreaux was on my examination table. She was thirty-two, though she looked fifty. The work of the cotton fields does that to a body. It eats you from the inside out, slowly, until one day you simply stop.

"Dr. Thorne," she said. Her voice was thin, like paper left out in the rain. "My hands."

I took them in mine. Her fingers were curled inward, the joints swollen and black, the skin cracked and bleeding. Cotton dust. It gets into everything. Into the lungs, into the blood, into the spaces where the soul is supposed to live.

"I can help," I said. It was not a promise. It was a fact, stated without conviction.

I mixed a poultice from the herbs I kept in the locked cabinet beneath the sink. Not my herbs—herbs I had learned from my father's notes, from the journals he kept in the basement of the great house that still stood at the edge of town, decaying slowly like a tooth that nobody had the courage to pull. The herbs grew on the old plantation land, the land my family had owned before the scandal, before the name Thorne became a word people said in whispers.

My father had been a good man, in his way. He loved this land. He loved the cotton. He loved the way the white bolls looked in the sun, like snow that had forgotten how to melt. But he was also a cruel man, and cruelty and love are not as different as people like to think. They are both forms of obsession. They both demand everything.

The poultice eased Sarah's pain. She closed her eyes and let out a breath she seemed to have been holding for years. When she opened them again, she said, "They say you're the best doctor in the parish."

"I am the only doctor in the parish," I said.

She smiled. It was a sad smile. "That's the same thing down here."

She left after sunset. I locked the clinic, walked home through streets that were empty except for the occasional figure moving like a shadow, and sat in my kitchen with a cup of coffee I would not drink.

The next morning, Sarah Boudreaux was found dead in her home.

The deputy came to my clinic at ten o'clock. Ray Boudreaux. Forty-five years old. Wore his badge like it was a burden he had accepted but not forgiven. He and I had known each other since we were children. He had played in the yard outside the great house. I had watched him from the windows. We were not friends—we were too different for that. Ray was a man of the land. I was a man who had left and come back, which in the South is a kind of betrayal whether you mean it to be or not.

"You need to come with me," Ray said.

"To where?"

"To Sarah's house."

I went.

She was lying on her bed, dressed in a white dress that had once belonged to her mother. Her hands were folded over her chest. Her face was peaceful. Too peaceful for a woman who had spent her life in pain.

But her mouth was full of cotton.

White cotton. Fluffy. Clean. As if someone had reached inside her and pulled it from the fields and packed it down, throat by throat, until she could not breathe.

I examined her. There were no external wounds. No signs of struggle. Her lungs were filled with cotton dust—fine white powder that coated the alveoli like snow. She had died slowly, choking on the very thing that had been killing her for thirty years.

"Autopsy?" Ray asked.

"I can do it," I said. "But you should wait for the state pathologist."

"The state pathologist is three hours away, Silas. And the sun is going to turn her into something unrecognizable by tonight."

He was right. I always did what I was supposed to do. That was my curse.

The autopsy was conducted in my clinic, on my table, under the light of a single bulb that flickered every forty seconds. I worked methodically. I always work methodically. My hands are steady. That is the one thing I have always been able to depend on.

Inside Sarah's stomach, I found something unexpected. Not cotton. A substance—powdery, greenish-white. I recognized it immediately. It was a compound derived from a plant that grows only on the old Thorne plantation. A plant my father cultivated in secret, in a greenhouse behind the house that nobody was supposed to enter.

I had seen it as a child. I had been forbidden to speak of it. I had forgotten it until this moment.

My father's journals, which I had not opened in fifteen years, described the plant in detail. Its Latin name was Asphodelus thornensis—named after my family, as if the earth itself recognized the stain we had put upon it. The plant contained alkaloids that could induce paralysis. In small doses, it was a painkiller. In large doses, it was a silent killer.

And my father had been experimenting with it for years. Not for medicine. For control.

The journal entry from 1921 read: "The Negroes of this land possess knowledge that predates Africa itself. They know the plants, the roots, the leaves. They know how to make the body still without killing it. I have employed this knowledge to improve the productivity of my fields. The workers who take the compound are quieter. Obedient. They work longer hours without complaint. It is a benevolent use of their gifts."

Benevolent.

The word sat in my mouth like poison.

I closed the journal. My hands were shaking. Not from fear—from shame. The kind of shame that is inherited, passed down through blood like a genetic disease.

Ray stood in the doorway. "What did you find?"

I looked at him. "I found the truth."

"What truth?"

"That our family built this land on something worse than cotton. We built it on silence. On stolen knowledge. On the bodies of people who were never allowed to speak for themselves."

Ray was quiet for a long time. Then he said, "How many more?"

I did not answer. I already knew. The compound was in the water supply. I had tasted it myself as a child. My father had put it there. "For the health of the community," he had said. It made people docile. It made them accept what they should have resisted.

Ray left. I locked the clinic. I drove to the great house.

The basement was exactly as I had left it fifteen years ago: damp, dark, smelling of earth and something else—something sweet and rotting. I found the greenhouse. The plant was still growing, thriving in the humid darkness, its leaves broad and green and innocent-looking.

I sat on the floor of the greenhouse and I wept. Not for Sarah. Not for the women who had died. For myself. For the man I had become—a doctor who healed bodies but could not heal the wound in his blood.

When I emerged from the house, the sun was setting. The sky was the color of a bruise. I drove to New Orleans. I did not look back.

In the French Quarter, I opened a small clinic. My hands were still steady. But I stopped looking in mirrors.