The heat in Blackwater did not simply exist. It occupied. It moved through the town like a living thing, pressing down on the tin roofs and the dirt roads and the cypress trees that stood in the swamp water like dark fingers reaching up from the earth. Dr. Silas Beauregard felt it on his skin the way a man feels the weight of a family he did not ask to inherit.

He was thirty-eight years old, the last son of the Beauregard family of Blackwater, and he practiced medicine in a building that had once been a general store and before that, according to his grandmother, a collection room for enslaved people who had been deemed too old or too sick to be useful. The building smelled of cypress wood and old money and the particular kind of damp that seeps into walls and stays there, year after year, like a memory you cannot shake.

The boil appeared on his back in early July, during the kind of heat that makes the air itself feel solid. He noticed it while dressing in the morning, catching his reflection in the mirror over the washstand, and saw the small red mark just below his right shoulder blade, no bigger than a pinhead. He touched it with his left hand and felt nothing, which was the first warning. A second warning would come later, when he turned and reached back and felt the small, hard lump that was already forming beneath the skin.

He told himself it was nothing. A pimple. A reaction to the new soap. The heat, perhaps. Blackwater heat was no joke. It made men mad. It made women hysterical. It made the swamp water rise three feet above its normal level and bring with it things that had not been seen in living memory.

By the third day, the lump had grown to the size of a marble. By the fifth, it was the size of a grape, and it was red and hot and tender, and when Silas pressed against it with his left hand, a wave of pain shot through his back so sharp that he had to sit down on the edge of the washstand and close his eyes and breathe through his teeth.

He thought of Ezekiel Monroe.

Zeke Monroe did not have a name that Silas cared for. It was a common name, given by a father who had no taste for distinction, and it suited the man. Zeke Monroe was a self-taught practitioner who operated out of a cabin on the edge of the swamp, about three miles west of Blackwater. He had never been to medical school. He had never held a license. He knew the names of every herb that grew in the Delta, from goldenseal to sassafras to the bitter root that Silas's grandmother had used to induce labor during the War. He knew how to set a bone with splints made from creek wood. He knew how to lance a boil with a knife that he sharpened on a stone and sterilized in a flame.

And his patients healed. They healed fast, and they healed clean, and they came back to thank him, which was something Silas's patients never did, because his patients were too busy being grateful in the way that poor people are grateful to a man who is poorer than they are: silently, resentfully, and with the expectation that he will ask for payment eventually.

Silas did not go to Zeke Monroe. Instead, he prescribed a topical ointment made from witch hazel and tea tree oil, applied a warm compress, and told himself that he was being prudent, not proud.

The boil grew. By the seventh day, it was the size of a walnut, and the redness had spread across his back like a stain of wine on white linen. He could feel the fever beginning, a deep and crawling heat that made his skin feel too tight for his body. He sent his housekeeper, Mrs. Leona Dupree, to the swamp to find Zeke Monroe and ask him to come examine the doctor's back.

Mrs. Dupree did not go. She came to Silas instead, stood in the doorway of his study, and said, "I did not go, Doctor. You should call him yourself."

"I did not send you because I wanted you to go," Silas said. "I sent you because I was testing your loyalty."

She looked at him for a long moment, and then she nodded and walked away, and Silas heard her footsteps on the porch boards, slow and deliberate, the way a woman walks when she has decided that she is done walking for someone.

By the tenth day, the boil was the size of a small orange. It was no longer merely painful. It was poisonous. Silas could feel it breathing, almost, as though it had a life of its own, expanding and contracting with the rhythm of his own heartbeat. The smell began on the twelfth day, a sweet, cloying stench that filled his study and clung to his clothes and made Mrs. Dupree hold her hand over her nose when she brought his meals.

He could not see his own back. He could not reach it. And the pride that had been woven into the fabric of the Beauregard family, passed down from father to son like a rifle or a family Bible or a debt, would not let him call Zeke Monroe.

On the fifteenth day, the rain came. It was a hurricane, the kind that the old people in Blackwater still called by the name of the year it had last happened, as though time in the Delta moved in circles rather than lines. The rain came at him like a wall, and the wind sounded like voices, and the cypress trees bent so low that their branches touched the ground and the swamp water rose three feet above its normal level and brought with it things that had not been seen in living memory.

Silas was lying on his bed, wrapped in damp sheets, when he heard a voice outside. Not Mrs. Dupree's voice. Not the voice of a neighbor. A man's voice, rough and certain and carrying the particular accent of the Delta that Silas had spent his entire life trying to erase from his own.

"Dr. Beauregard?" the voice said. "I know you're in there. I can smell you."

Silas knew who it was. Jesse Rainey. A佃农's son, nineteen years old, with hands that were already calloused from work that would callouse a man twice his age. Jesse had come to Silas three weeks ago with a cut on his leg, a deep slice from a piece of rebar, and Silas had stitched it up in five minutes flat and told him to keep it clean and come back in a week. Jesse had come back in three, because the cut was getting worse, and Silas had cleaned it again and given him some honey to apply and told him to come back in three days.

Jesse had not come back in three days. He had come back in three hours, and he had not stopped talking since.

"Doctor," Jesse said, standing in the doorway, wearing a soaked overcoat and looking around the dark room with the wary curiosity of a man who had never been inside a doctor's house, "my daddy sent me. He said you're sick."

Silas wanted to close the door. He wanted to tell Jesse to go away and leave him alone with his damp sheets and his dying. But his body had become a landscape of pain, and the boil on his back was a second spine, and the fever was making the room tilt slightly to the right, and he understood, with a clarity that was almost comical, that Jesse Rainey was the only person in Blackwater who was going to help him.

"Come here," he said.

Jesse came closer, and Silas turned around and lifted his shirt and showed him his back, and Jesse stopped talking. He examined the boil the way a farmer examines a crop that is dying, without judgment, without drama, just the simple act of looking at something broken and trying to understand how it had come to be broken.

"Lord have mercy," he said.

"I know."

"You need Dr. Monroe."

"I know that too."

Jesse was quiet for a moment. Then he said, "My daddy says Dr. Monroe is the best healer in the Delta. Says he can fix anything that grows in the ground or on a body. Says the herbs he uses, they know the land. They know what the land needs."

Silas looked at the dark stain on his back in the mirror. He looked at the damp sheets. He looked at Jesse Rainey, who was standing in the middle of his bedroom looking profoundly out of place and profoundly kind.

"Go get him," Silas said.

Jesse went. He came back an hour later with Zeke Monroe, who was exactly as Silas had imagined and exactly as he had not: a large man with large hands and a face that had been shaped by sun and wind and the kind of labor that does not appear on a medical school transcript, and a bag of herbs that smelled of the swamp and the earth and something older than both.

Zeke examined the boil in silence. He touched it gently, and Silas flinched, and Zeke nodded once, as though he had expected the flinch and understood it perfectly.

"It's deep," Zeke said. "Deeper than it looks. I need to cut deep to get it all."

"Do it," Silas said.

Zeke took out a knife, sharpened on a stone, sterilized in a flame, and cut into Silas's back with a hand that was steady and sure and infinitely more skilled than anything Silas had ever possessed. The pain was blinding. He bit down on the edge of the bed and did not scream. When it was over, Zeke packed the wound with honey and herbs and wrapped it in a clean bandage made from a shirt that had belonged to Silas's father.

"You'll live," Zeke said. "But you need to stop carrying things that don't belong to you."

Silas wanted to argue. He wanted to tell Zeke that he knew exactly what he was carrying, that he had been carrying it since the day his father had died and left him the house and the debt and the name and the weight of a family that had once been something and was now nothing but a building and a name and a boil on a back that no one could see. But the words would not come. Instead, he said, "Thank you."

Zeke nodded once. "You're welcome. Now rest. And don't write me a letter. Just come see me next time."

Silas did not see him next time. The boil healed. The fever broke. The pain receded like a tide going out. But the scar remained, a long, dark line on his back that he could feel when the weather turned cold, and he knew, with a certainty that was almost painful, that some wounds never heal. They scar over, yes, and the scar becomes part of you, and you learn to live with it. But it remains.

He wrote Zeke a letter three weeks later. Not a thank-you letter. A medical letter. A case description. A patient. A diagnostic dilemma that he had encountered in his practice and had not been able to resolve on his own. He wrote it in his best handwriting, on the best paper he had, and he sealed it in an envelope and wrote Zeke's name on the front in letters that were larger and more careful than they needed to be.

He did not send it. He put it in his desk drawer, next to a letter he had written to his father the year his father had died and had never sent, and he closed the drawer and sat down at his desk and waited for the morning, when he would go to the swamp and find Zeke Monroe and ask him, in person, how to do his job better.

But he did not go the next morning. Or the morning after that. The hurricane had taken something from him that he could not name, and the heat returned, and the swamp water rose, and the cypress trees bent, and Silas Beauregard sat in his study and waited for the letter to yellow and the paper to crack and the ink to fade, and he knew, with a clarity that was almost peaceful, that he would never send it.

He died six months later. Not from the boil. From something slower and more insidious, the kind of thing that grows in the dark and feeds on silence. The coroner called it septicemia. Mrs. Dupree called it pride. Jesse Rainey called it nothing at all. He simply stopped coming to the clinic, and when Mrs. Dupree asked him why, he said, "I don't need to. Dr. Beauregard's gone."

And that was the end of Dr. Silas Beauregard of Blackwater, the last son of a family that had once been something and was now nothing but a building and a name and a scar on a back that no one would ever see.