The royal bedchamber at Versailles had witnessed four decades of carefully staged ritual, but on the morning of September 1st, 1715, it held a scene no choreography could control. Around the great bed, a crowd of nobles pressed shoulder to shoulder, their faces a mixture of fear and calculation, their perfumed handkerchiefs doing little against the stench that filled every corner of the room. The man in the bed no longer looked like a king. His legs had turned black and green, the flesh liquefying where it lay beneath the sheets.

His face was gray, his lips blue. He had been conscious through almost all of it. For twenty-two days he had watched his own body die from the feet up, had smelled his own rot, had ordered affairs of state while necrosis consumed him. And now, as the dawn light filtered through the tall windows, his breathing slowed, stopped, started again, stopped.

A courtier stepped forward and held a mirror to the king’s lips. No breath fogged the glass. He turned to the room and spoke the words that would close an epic: the king is dead. Long live the king.

The silence lasted perhaps three seconds. To understand how the most powerful man in Europe came to be lying there, it is necessary to return to the morning of August 10th, 1715, when Louis the Fourteenth was still the Sun King in all his glory. He was seventy-six years old, had ruled France for seventy-two years, and maintained the same rigid routine he had followed for decades. Up at 8:30 sharp for the Grand Lever, the theatrical ceremony where chosen nobles watched him dress, each button and buckle a sacred ritual.

Then chapel. Then meetings with ministers. Then dinner eaten in public view, a hunting trip to Marly, his favorite escape from the suffocating etiquette of Versailles, ended the day. He had spent that morning riding for hours through the same forests where he had hunted since he was a boy of five.

At seventy-six, he could still spend six hours in the saddle without complaint. The courtiers who rode with him that day would later remember nothing unusual. The king seemed in good spirits, even jovial. It was on the ride back that he felt it: a sharp, stabbing pain in his left leg just above the knee.

Nothing dramatic, just enough to make him shift in his saddle. By the time his carriage rolled through the gates of Versailles that evening, he was limping. His chief physician, Guy-Crescent Fagon, examined the leg and declared it sciatica. A bit of rest, some poultices, and his majesty would be dancing again within the week.

Fagon’s incompetence would literally cost the king his life. Louis the Fourteenth did not rest. He could not, or rather, he would not. For seventy-two years he had been the fixed point around which all of France, all of Europe revolved.

To show weakness was unthinkable. So the next morning, August 11th, he got up for the Lever as usual. He stood through mass despite the pain shooting through his leg. He presided over the council of state, his face a marble mask.

But those closest to him noticed things: the way he gripped the arm of his chair until his knuckles went white, the beads of sweat on his forehead during dinner even though the August evening was cool. Madame de Maintenon, his secret wife—secret because she had been born a nobody and Louis could not officially acknowledge their marriage—saw how he barely touched his food. This from a man who usually devoured twelve courses without blinking. By August 13th, the pain had become a burning sensation, as if someone were holding a torch to his flesh from the inside.

Fagon prescribed laudanum, opium mixed with wine, but it barely took the edge off. That same morning, the king’s valet noticed a small black spot on his leg about the size of a coin. When they pointed it out to Fagon, he waved them away. Just bruising from the pressure, he said.

Apply more poultices. Here was what Fagon did not know or chose to ignore: that black spot was necrosis. Tissue death. The beginning of senile gangrene, where the blood supply to the extremities fails and the flesh literally starts to die while you are still using it.

It is more common in elderly diabetics, and Louis, after a lifetime of consuming massive quantities of meat and sweets at his legendary banquets, almost certainly had diabetes. But eighteenth-century medicine did not know what diabetes was. They did not understand circulation. They thought the body was governed by four humors that needed to be balanced.

By August 15th, the feast of the Assumption, Louis the Fourteenth gave his last public performance. He had to be practically carried to the chapel, but once there he stood through the entire mass. Witnesses described his face as gray, his lips blue-tinged. The smell had already started, that sweet, cloying stench of rotting flesh that anyone who has worked in a hospital knows.

It clung to his clothes, filled the chapel. Some courtiers discreetly held perfumed handkerchiefs to their noses. That night, his leg swelled to twice its normal size. The black spot had spread, creating what looked like an ink stain creeping up from his foot toward his knee.

The skin was tight, shiny, starting to crack and weep foul-smelling fluid. Fagon finally called in other physicians, not because he admitted he was wrong, but to spread the blame for what was clearly becoming a disaster. Four of the most celebrated doctors in France arrived on August 17th. They examined the leg, now mottled purple and black, swollen like a grotesque sausage.

They conferred in hushed Latin, throwing around terms like mortification and putrefaction. Then they prescribed their remedy: donkey milk baths and camphorated spirit dressings. They also decided to bleed him. Louis, weakened from pain and lack of food, fainted three times during the procedure.

When he came to, he asked them plainly, Am I dying? They lied to his face. Your majesty’s constitution is remarkably strong, they said. With rest and treatment, recovery is assured.

Meanwhile, in the corridors of Versailles, the death watch had begun. Not the noble vigil one might imagine, but something far uglier. Philippe d’Orléans, the king’s nephew, had already sent riders to Paris to alert his supporters. The Duke of Maine, Louis’s illegitimate son, whom he had legitimized and named in his will, was gathering his own faction.

They circled like vultures around a dying animal, except the animal was still conscious, still giving orders, still trying to rule France from his bed of agony. August 25th was the day Louis the Fourteenth finally broke. It was St. Louis’s day, the feast day of his ancestor and namesake, Louis the Ninth, the crusader king who had been canonized as a saint.

Louis had always marked this day with special ceremony. He was determined to at least show himself to the court, to prove he was still alive, still king. His valet tried to dress him, but when they attempted to pull stockings over his legs, he screamed. Actually screamed, for the first time in his life in public.

The silk stocking came away bloody, with pieces of blackened skin stuck to it. The smell that filled the room was indescribable. One courtier later wrote that it was as if all the graves of Saint-Denis had been opened at once. They carried him to his bedchamber, and Louis the Fourteenth never stood again.

What happened over the next seven days defies belief. The gangrene had now consumed his entire left leg from foot to thigh. The flesh was black, green in places, literally liquefying. Surgeons who examined him reported that you could push your finger through his leg like soft cheese.

The smell was so overwhelming that servants had to burn perfume constantly, creating a bizarre mixture of incense and decay that made people retch. Yet Louis’s mind remained clear, horrifyingly, agonizingly clear. He conducted state business from his bed, signing documents with a shaking hand. On August 26th, he summoned his five-year-old great-grandson, little Louis, Duke of Anjou, the future Louis the Fifteenth.

Picture this: a dying king, his leg rotting off his body, the room thick with the stench of death, and in walks this tiny boy in his silk court dress, probably terrified out of his mind. Louis the Fourteenth pulled the child close, close enough that the boy must have been overwhelmed by the smell, and spoke words that would echo through history. My child, you are about to become a great king. Do not imitate me in my love of warfare.

Try to relieve your people’s burdens, which I have failed to do. I have loved war too much. Do not imitate me in that, nor in my excessive spending. This farewell advice is attested in court memoirs.

Consider it: the Sun King, who had waged war for fifty-four of his seventy-two years of rule, who had built Versailles at a cost that would be billions in today’s money, who had styled himself as a god-king, was confessing his failures to a five-year-old. He knew the treasury was empty, the people exhausted, the nation bled dry by his ambitions. He was begging a child not to repeat his mistakes. The boy was led away in tears.

He would never see his great-grandfather again. On August 27th, the surgeons made a horrifying discovery. They judged that the gangrene had reached the bone. Louis looked at it and said, with that dark humor that emerges in the face of death, Gentlemen, I appear to be falling apart ahead of schedule.

One surgeon, a man named Maréchal, finally had the courage to tell the truth. He took the king’s hand and said, Sire, we could amputate the leg, but it would only buy you days, perhaps hours. The corruption has spread too far. Your majesty should make preparations.

Louis refused amputation. If I must die anyway, I prefer to keep all my limbs. He had known, of course. He could see his own leg rotting away.

He could smell his own decay. But hearing it confirmed seemed to bring him a strange peace. He turned to his confessor and said, I have lived as a king. At least let me die as a Christian.

August 28th and 29th were days of farewell. Louis called in his courtiers in small groups, thanking them for their service, asking their forgiveness for any wrongs. Many wept openly, not just for the dying king but for the end of an era. These people had known no other monarch.

Some had been born at Versailles, had lived their entire lives in Louis’s shadow. What would happen when the sun finally set? To his illegitimate children he gave his blessing and wept, knowing that his brother and nephew would strip them of their rank the moment he died. To Madame de Maintenon, his secret wife, he said, I thought dying would be harder.

She held his hand as the fever consumed him, as his body temperature spiked so high that his physicians could not understand how he was still conscious. The political vultures, meanwhile, were getting bolder. Philippe d’Orléans was already acting as if he were regent, giving orders to ministers, promising positions to supporters. The Duke of Maine was frantically trying to secure military backing.

Letters flew between Versailles and Paris, Versailles and Madrid, Versailles and Rome. Everyone wanted to know how much longer. On August 30th, something bizarre happened. A man named Brun, who claimed to be a healer from Marly, talked his way into the royal bedchamber.

He said he had an elixir that could cure gangrene. The regular physicians protested, but Louis, perhaps desperate for any hope, or maybe just curious, allowed it. Brun gave him several drops of a red liquid. Within an hour, Louis felt better.

The fever dropped. He asked for food, the first time in days. The courtiers in the antechamber began to celebrate. A miracle.

The king would live. Plans for the succession were hastily shelved. Philippe d’Orléans allegedly went pale when he heard the news. It was a false dawn.

By that evening, the fever had returned worse than ever. The pain in his leg, which had been numbed by the advancing necrosis, came roaring back as if his nerves were on fire. Louis spent the night of August 30th to 31st in absolute agony, crying out despite himself, begging God to take him. His last coherent day was August 31st.

He confessed to his Jesuit confessor, Père Le Tellier. The last rites were administered by Cardinal Rohan. Then he did something extraordinary: he ordered his courtiers to open the curtains of his bed fully, so everyone could see him. See what the Sun King had become.

This rotting, dying thing that had once been the most powerful man in Europe. Look well, he said. This is what becomes of the glory of kings. As midnight approached, Louis began to drift.

His breathing became shallow, rattling. He muttered prayers in Latin, fragments of Psalms he had learned as a child. At one point he clearly said, I thought dying would be harder. Now I know it is.

Then came the morning of September 1st, and the mirror that held no breath. The king is dead. Long live the king. Philippe d’Orléans immediately left the room to secure his regency.

The Duke of Maine tried to follow but found his path blocked by Orléans’s guards. The coup was already in motion. Courtiers scattered like roaches when a light comes on, some racing to align themselves with the new regime, others fleeing to their estates to wait and see which way the wind would blow. Louis the Fourteenth’s body lay abandoned, the smell so overwhelming that the room had to be evacuated within an hour.

The royal corpse was displayed in the Mercury room at Versailles. When the embalmers arrived, they nearly refused the job. The king’s legs had putrefied so completely that they fell apart when moved. They had to essentially pour what remained of Louis the Fourteenth into his coffin.

It lay in state there from September 2nd to 10th. Royal tradition demanded that the body be divided into three parts: the corpse would go to Saint-Denis, the heart to the Jesuits’ Church of Saint-Louis, and the entrails to Notre-Dame. But the body was in such condition that the procedure became a grotesque exercise in salvage. The funeral procession on September 9th was a shadow of what it should have been.

Yes, there were torches and prayers and all the pomp, but contemporary accounts note that some along the route jeered. After seventy-two years, France was sick of the Sun King. The most telling moment came during the funeral oration. Bishop Massillon stood before the assembled nobility in Saint-Denis, looked at Louis the Fourteenth’s coffin, and began his sermon with these words: God alone is great.

Not “Louis the Great is dead. ” Not “We mourn the Sun King. ” Just: God alone is great. It was a repudiation of everything Louis the Fourteenth had stood for.

On September 2nd, Philippe d’Orléans had the king’s will annulled by the Parlement de Paris and made himself sole regent. Within a week, the court left Versailles. The regent governed from Paris. It was as if the Sun King had never existed.

The great palace Louis had built as a monument to his glory stood empty, a seven-hundred-room tomb for a dead dream. The physicians who had attended Louis, especially Fagon, who had misdiagnosed the gangrene until it was far too late, fled court in disgrace. Fagon died in 1718. In his final delirium, witnesses said he kept crying out, The black spot.

I should have seen the black spot. Perhaps the most poignant aftermath came from little Louis the Fifteenth, that five-year-old boy who had inherited an empty treasury and an exhausted nation. Years later, as an adult, he would tell people about his last meeting with his great-grandfather: how the smell had made him sick, how the rotting king had pulled him close and whispered about not repeating his mistakes. He did not listen.

Louis the Fifteenth would rule for fifty-nine years and leave France even more bankrupt, even more broken. The Bourbon monarchy would limp on for two more generations before the French Revolution finally put it out of its misery. In 1793, when the revolutionaries broke into the royal tombs at Saint-Denis, they found Louis the Fourteenth’s lead coffin. The lead was melted down for bullets.

The remains were thrown into common pits and covered with quicklime. The Sun King, who had been popularly credited with proclaiming l’état, c’est moi—I am the state—ended up as a few handfuls of bone fragments dissolved in lime. His surgeon Maréchal left one final observation in his notes: His majesty died as any peasant might die of the same affliction. Slowly, painfully, and with full knowledge of what was happening to his body.

In death, the king discovered he was merely a man. The horror of Louis the Fourteenth’s death was not just the physical agony, though that was terrible enough. It was the complete destruction of an illusion that had held France in thrall for seven decades. The Sun King could not die like ordinary men.

Except he did, and worse than most. He died over twenty-two days of increasing putrefaction, each day stripping away another layer of the mystique that had made him seem immortal. Today, when you visit Versailles, they show you the grandeur: the Hall of Mirrors, the vast gardens, the gold, marble, and crystal. They do not show you the Mercury room where his coffin lay in state.

They do not tell you about the servants who had to burn pounds of incense to cover the smell of royal decomposition. They do not mention that the Sun King’s last words were not some profound statement about glory or France, but a simple, exhausted: Now I know it is. Meaning, now I know dying is hard after all. Flesh rots the same whether it is wrapped in silk or sackcloth.

Death does not care about your divine right. And when the gangrene comes, whether it is in your leg or in your kingdom, all the glory in the world cannot stop the rot.