The apothecary’s daughter was bought to be a dying duke’s widow — but she smelled the poison in his wedding wine and knocked the cup from his hand before sixty guests. They locked her in her rooms. The wasps on the terrace died overnight, and no one counted them but her.

 PART 4

He was quiet for a while, watching her strip dried leaves from their stalks. The room smelled of rosemary and cold stone.

“Bracken tells me you mended the boy’s arm,” he said at last. “And that you asked nothing, and told no one, and that she has decided you are to be kept. I have known that woman forty years. It is the fastest surrender I have witnessed.”

“He’ll keep the arm and lose the scar in a year. Children heal fast when they’re fed.”

“You keep accounts of it.” He was looking at the daybook — the ruled columns, the neat arithmetic of grains and drams. Not touching it. He never touched anything of hers without asking; she had begun to notice that. “My steward’s books are kept worse.”

“My father kept a daybook forty years. He said an apothecary without a daybook is a poisoner with good intentions.”

The word lay in the quiet room like a dropped needle, and she let it lie there, and did not soften it.

The duke looked at her for a long moment. Under the candlelight the bones of his face were plain as a lesson in a surgeon’s hall.

“Since your wedding-morning opinion of my wine,” he said, “I have four times let the evening glass stand, and emptied it into the ashes when Gates’s back was turned. A childish experiment. But I sleep on the nights I cheat, madam, and I am in pain on the nights I obey — and I was bred to weigh evidence, and the evidence has begun to weigh back.”

Verity kept her hands moving among the rosemary and said nothing.

“So I will ask you once, plainly, and I will believe the answer.” He set the chamber-stick down. “What was in my cup at the wedding?”

“Cherry-laurel water,” she said. “Enough to flavor a wedding. And if you had drunk it, your Grace, they would have said the excitement of the day had finished what the curse began — and buried you inside the week, and me they’d have sent home with the widow’s portion they bought me for.”

The candles burned. Somewhere above them the house ticked and settled, all its dark rooms breathing.

“Pour my tonic,” the duke said at last. “Every night. From your hand and no other’s.”

He stood, took up his light, and paused at the door.

That evening the Duke of Halewick slept seven hours without pain for the first time in a year.

And in the morning, Dr. Croft, hearing of it, wrote a letter, and asked the groom to ride for London before the post.

For nine days the Duke of Halewick mended like a field after rain: slept, ate, walked the gallery end to end without stopping to disguise the rest. On the tenth day Dr. Croft came to dinner and saw it, and his face performed delight while his eyes added and subtracted.

“Remarkable,” he said over the soup. “Remarkable. And yet, your Grace — forgive a physician his caution — it is exactly this false vigor I most fear. The constitution rallies before the last descent. I have seen it a dozen times. I would be failing forty years of trust if I did not correct your regimen tonight, myself.”

The corrected dose came up with the port: the dark bottle, Croft’s own hand, Croft’s own eyes on the glass until the glass was empty.

“His Grace has already had his draught,” Verity said, from her end of the table.

Croft smiled at her the length of the cloth. Nothing was so dangerous to a delicate system as a woman’s arithmetic.

And Julian — courteous to the bone, unwilling to accuse a man of forty years’ service on the strength of an ash-bin experiment — drank.

She watched his throat move and kept her face pleasant, and under the table her nails made four small moons in her palm.

By midnight the house was awake. The pain took him the old wire-hot way, doubled hard around his own middle; his pulse ran thin and small under her fingers; the sweat stood cold on him. Croft was in the bedchamber before her, sleeves back, calling for brandy and his bag, sorrowful and unsurprised and utterly in command.

Verity stood in the doorway in her wrapper and heard herself speak in her father’s Sunday voice — the one that had once turned a magistrate’s bailiff on the shop stair.

“Get out of my husband’s room.”

“Madam is distressed—”

“Salts of Epsom, warm water, and laudanum for the pain. That is what he needs, and I will give it, and I have measured doses since before I could read. You will not touch him.”

And then, because a room hears what it is watching:

“Gates, the doctor is leaving. Light him down.”

Croft looked round the chamber for his allies and found arithmetic instead. Two footmen who had watched her save Davy’s arm. A butler who owed her nothing, but had heard the duke sleep nine nights running. And Mrs. Bracken in the door with a candle, sixty years of Halewick in her face.

He bowed, and went. Doctors of his kind always go; they win in drawing rooms, later.

She fought for the duke for three days and nights. Salts and warm flannel, egg-white in milk when he could hold it, laudanum measured on her father’s scales while Bracken held the light. She slept in the chair when she slept at all, one hand on his wrist, counting.

On the third morning his pulse came up under her fingers like a man surfacing from a dive, and he opened his eyes, found her in the chair, and said, in a thread of his ordinary dryness:

“You are still here, Duchess. How very unfashionable.”

It was Mrs. Bracken who carried the verdict out of that room and set it down in front of the household — in the corridor, with Gates and both footmen by, and Dr. Croft come back sleek and grave to reclaim his patient. She stood in the sickroom door with her arms folded and delivered it like a woman laying a stone on a wall.

“I watched his Grace die by inches for two years, Doctor, under all your bottles. She gave him back to me in three weeks. You’ll not put her out of this room while I stand in this door — and I have stood in this door since before you bought your first pair of gloves.”

It went through the servants’ hall by dinner, and the county by Sunday: the bought bride had sat up three nights and pulled the duke back with her own hands. In the retelling, county-fashion, the madwoman who spoiled the toast quietly became the wife who knew.

Croft took his leave with his gloves unhurried, buttoning at the door with terrible leisure.

“A word, your Grace,” he said to her, pleasantly, softly, at the foot of the stair. “You have a gift, and gifts get talked of. Poison is an ugly word — I have heard it whispered in this county once or twice of late. It is a word that sticks, madam. And it sticks first, and hardest, to whoever says it first.”

He bowed, and the door took him, and Verity stood a while on the cold stair.