Read Chapter 6: The Poisonous Confession

The Duchesse’s cough had grown worse by the time Marguerite returned from the kitchens. It was a dry, rattling sound, like autumn leaves skittering across stone, and it shook the fragile frame beneath the silk coverlet. Her mistress’s cheeks, once the envy of every court painter, had taken on a waxy pallor that no amount of rouge could hide.

“Marguerite,” the Duchesse whispered, reaching out a hand that trembled at the wrist. “I feel as though my blood has turned to lead.”

Marguerite knelt beside the bed and took the cold fingers in her own. The herbal remedy Dr. Beaumont had given her sat in a small phial against her breast, but she dared not administer it without his leave. Not yet. Not when she did not know what else might be working against her mistress.

“Rest, Your Grace,” she said, smoothing the damp hair from the Duchesse’s brow. “I will send for Dr. Beaumont.”

“No.” The Duchesse’s grip tightened, surprising in its strength. “He came this morning. He gave me something for the fever.”

Marguerite’s blood went cold. “He came *this morning*?”

“Before dawn. He said the air in the galleries was bad for my lungs.” The Duchesse let out a wet, rattling breath. “He was kind. More kind than most.”

Marguerite forced her face into a mask of calm, but inside, a storm was gathering. Dr. Beaumont had promised to protect the Duchesse. He had given Marguerite the remedy with his own hands. Why would he visit without telling her? Why would he dose her mistress with something she had not been shown?

She pressed her lips together and made a decision.

“Your Grace,” she said, keeping her voice low and even, “I must ask you something, and I beg you forgive the impertinence.”

The Duchesse’s eyes, dull with exhaustion, flickered with something like interest. “You have earned the right to impertinence, child. Speak.”

“Your brother. Armand de Saint-Père. Has he visited you of late?”

The question hung in the air like smoke. The Duchesse’s face underwent a subtle transformation—the weariness hardening into something guarded, almost fearful.

“Why do you ask?”

“Because I have seen him in company that troubles me. And because I fear—” Marguerite hesitated, weighing the words she was about to speak. Once said, they could not be unsaid. She would be accusing a nobleman of plotting murder against his own sister, and she had only her own witness and a servant’s word to support her.

But the Duchesse was dying. Marguerite could see it in the hollowing of her cheeks, the blue veins that mapped her temples like rivers on an old chart. She had no time for caution.

“I fear he means you harm, Your Grace.”

The silence that followed was long enough to hold a prayer. Then the Duchesse let out a shuddering breath, and her eyes filled with tears she did not bother to wipe away.

“I know,” she said.

Marguerite’s heart stopped. “You *know*?”

“I suspected it in the spring, when he asked me to sign over the deeds to our grandmother’s lands. He said it was for debts. I refused.” She swallowed painfully. “Three days later, I took ill for the first time.”

“And you said nothing? You did not go to the King, to your friends at court?”

The Duchesse gave a laugh that turned into a cough, bloody and raw. “To whom, Marguerite? My brother is the only family I have left. The court would see it as a sordid squabble between siblings, nothing more. And without proof…” She shook her head. “What proof do I have that he wishes me dead? A chill in his voice? A missed dinner? The instincts of a woman who has known him since the cradle?”

“You have proof now,” Marguerite said quietly. “Or you will have it soon.”

She told her mistress everything then—the vial in the moonlit grove, the Comtesse de Brionne’s parcel, the bitter almond scent in the tisane. She told her about Armand at the gambling den, the forty-thousand-livre debt, and the Marquis de Brissac who had handed him the poison with a smile.

By the time she finished, the Duchesse’s face had gone the color of old bone.

“Brissac,” she whispered. “He has always hated our house. His father lost a fortune to mine at cards—forty years ago, they say he never forgave it. And now he sits at the heart of the Queen’s charities. He wants my seat on the council. He wants my influence.”

“But he cannot have it while you live,” Marguerite finished.

The Duchesse closed her eyes. Two tears escaped down her hollow cheeks. “My brother would see me dead to pay a gambling debt. My brother, who I held in my arms when the fever took our mother. My brother, who wept at her funeral as though the world had ended.”

Marguerite reached out and took her hand again. This time, the Duchesse did not pull away.

“We will not let him succeed, Your Grace. But I must know everything. Is there anything else you have taken—any cream, any powder, any drink—that came to you through someone else’s hands?”

The Duchesse’s brow furrowed. “My new night cream. From the perfumer near the Palais Royal. It was a gift from the Comtesse de Vaudreuil, sent with a note saying it would restore my complexion.” She gestured weakly toward her vanity table. “I have used it every night for a week.”

The name landed in Marguerite’s gut like a stone. The Comtesse de Vaudreuil—the woman she had seen whispering to Armand at the dinner, the woman whose connection to the poison ring she had only begun to suspect.

“May I take it, Your Grace?”

“Take whatever you must. Only tell me I will live to see my brother brought to justice.”

Marguerite pressed her mistress’s hand, then rose and crossed to the vanity. The cream sat in a small porcelain pot, pale as milk, capped with a silver lid engraved with roses. She unstoppered it and raised it to her nose.

Nothing. No bitter almonds.

But arsenic, she knew, had no scent. And some poisons were clever enough to hide themselves in perfume.

She wrapped the pot in a linen cloth and tucked it into her pocket. “I must consult Dr. Beaumont. He will know what to do.”

The Duchesse caught her wrist. “You trust him?”

The question struck Marguerite like a blow. She remembered Beaumont’s own warning, the way he had looked at her when he spoke of crosses and lines. She remembered, too, that he had come this morning without telling her, and had given the Duchesse something she had not seen.

“I do not know,” she said honestly. “But he is the only physician in Paris who knows of the poison, and he has already saved my life once. I must take that chance.”

The Duchesse released her wrist. “Be careful, Marguerite. The court devours those who see too clearly.”

Marguerite slipped through the service corridors, the porcelain pot burning against her ribs like a live coal. She found Beaumont in his small chamber off the infirmary, hunched over a treatise on botanical remedies. He rose when she entered, and his face went sharp with alarm.

“You should not be here,” he said. “If anyone saw you—”

“My mistress is dying,” Marguerite said. “And you visited her this morning without telling me. What did you give her?”

Beaumont’s jaw tightened. “I gave her a tincture of belladonna to ease the spasms in her lungs. Nothing more.”

“And you did not think I should know?”

“I thought you had enough to carry.” He searched her face. “You have learned something. You have that look about you.”

She set the porcelain pot on his table. “This is a cream the Comtesse de Vaudreuil sent to the Duchesse as a gift. I believe it is poisoned.”

Beaumont stared at the pot for a long moment. Then he sat down heavily, his shoulders bowing.

“You have stumbled onto something larger than you know,” he said slowly. “The Comtesse de Vaudreuil’s name appears in a certain ledger kept by the lieutenant of police. Thirty years ago, they called it the affair of the poisons—a network of courtiers and noblewomen who sold arsenic and belladonna to anyone willing to pay. Hundreds were implicated. Many were executed.”

“And the Comtesse?”

“She was never caught. But the records—I have seen them, in the archives of the Bastille—they name her as a supplier to half the great families of France.” He looked up at her with eyes that held more sorrow than she had ever seen. “It was the Comtesse de Vaudreuil who sold the poison that killed your mother.”

The room tilted around Marguerite. She gripped the edge of the table to keep herself upright.

“You knew.”

“I knew,” he said softly. “I have known for years. And I have carried the guilt every day since, because I was the physician who signed your mother’s death certificate. I called it a fever. I did not know the truth until it was too late.”

A sound came out of Marguerite’s throat—something between a gasp and a sob. “Why did you not tell me? All these weeks, you let me chase shadows when you held the truth in your hands?”

“Because knowing the truth has a price,” Beaumont said. “The Comtesse de Vaudreuil is protected by those above her. The ring she serves reaches into the royal household itself. If you move against her without proof, you will be crushed—and the Duchesse with you.”

He reached into his coat and drew out a small glass phial, dark liquid swirling within. “But now you have given me something I never had before: a direct link between the Comtesse’s hand and her intended victim’s vanity table. With this—” he held up the porcelain pot, “—I can test it for arsenic. If the poison is there, we will have evidence enough to go before the King’s own minister.”

“And if it is not?”

Beaumont’s eyes met hers. “Then we will know they have grown clever enough to poison her through another route. And we will be back where we began—with a dying duchesse and a brother who will inherit everything she leaves behind.”