3. The Mirror of Arsenic

Three days after Detective Inspector Hollis's visit, the first of the anonymous letters arrived at Rutherford Hall.

It was delivered not by post but by hand, slipped under the front door sometime in the small hours of the morning. Grimsby discovered it at half-past six, a cream-colored envelope of heavy stock, unmarked by stamp or address, sealed with a blob of crimson wax that bore no imprint. Inside was a single sheet of paper, upon which had been typed a single sentence:

The soup was not the beginning. It was the second course.

Mrs. Priddy brought it to Edwin in the breakfast room, her face drawn with worry. He read it twice, then folded it carefully and tucked it into his breast pocket before any of the others could see.

"What does it mean, sir?" Mrs. Priddy asked, her voice barely above a whisper. "The second course? What was the first?"

Edwin looked at the sideboard, where the silver chafing dishes steamed with scrambled eggs and grilled tomatoes and bacon, and he thought about the day his father had died. The stroke, the doctors had said. Quick and merciful. But Augustus Rutherford had been in excellent health for a man of seventy-three. His own father had lived to ninety-one. There had been no autopsy, of course—the family had seen no need. The family never saw the need.

"Thank you, Mrs. Priddy," Edwin said. "Please do not mention this to the others. Not yet."

She nodded and withdrew, her footsteps quick and fearful on the marble floor. Edwin sat alone in the pale morning light, the letter heavy against his heart. Someone in that house knew something. Someone was telling him, in the most oblique way possible, that his father's death had not been natural. And someone wanted him to know that the game had been in motion long before the reading of the will.

He was still sitting there when Clara came down, dressed for a day in Penning town. She was carrying her handbag and a pair of driving gloves, and she paused in the doorway when she saw his expression.

"You look as though you've seen a ghost," she said.

"Perhaps I have." Edwin withdrew the letter and held it out to her. "This was delivered sometime last night. Hand-delivered to the front door."

Clara read it, her dark eyes moving swiftly over the typed words. When she looked up, her face was unreadable. "The second course. Meaning there was a first."

"So it would seem."

"And the first would be..."

"Father."

Clara handed the letter back to him. Her fingers, he noticed, were perfectly steady. "Someone is trying to frighten us. Or to manipulate us. Perhaps both."

"Or someone is telling the truth." Edwin folded the letter and returned it to his pocket. "You were with Father on the day he died. You were at the board meeting. Tell me what happened."

For a long moment, Clara said nothing. Then she walked to the sideboard and poured herself a cup of tea, her movements deliberate and slow. "The meeting was routine. Quarterly review. Charles was presenting the West Hindles expansion plan. Father was in good spirits. He'd been drinking his usual mineral water—he never touched alcohol before noon—and eating those ginger biscuits he was so fond of. He'd eaten three or four of them during the meeting." She took a sip of her tea. "About an hour in, he began to complain of indigestion. He loosened his collar. His face went red. Then his left eye drooped, and he started to slur his words. Charles called for a doctor, but by the time the ambulance arrived, Father was already unconscious. He never woke up."

"Ginger biscuits," Edwin said quietly.

"From a tin on his desk. His secretary, Miss Dawlish, kept them for him. He'd been eating them for years." Clara set down her teacup. "You think someone poisoned the biscuits."

"I think someone may have poisoned something."

"If you're right—if Father was murdered—then the will was not the beginning of the game. The will was the response to it." Clara's voice was low and urgent. "Don't you see? Father knew someone was trying to kill him. That's why he changed the will. He wasn't trying to set us against each other. He was trying to protect the legacy from whoever had already started the killing."

The possibility had not occurred to Edwin, and it rearranged everything in his mind like the shifting of tectonic plates. If Clara was right—if Augustus had suspected his own death was imminent—then the will was not an act of cruelty but of desperation. A trap designed to expose a murderer who was already among them.

"Who knew about the ginger biscuits?" Edwin asked.

"Everyone. The whole family. The staff. Anyone who had ever visited his office. It was no secret."

"So anyone could have tampered with them."

"Anyone at all."

They looked at each other across the breakfast table, and for the first time, Edwin saw something in Clara's eyes that he recognized. Not fear, exactly, but a kind of weary acknowledgment. They were both caught in the same snare, and neither knew where the next blow would fall.

That afternoon, the family gathered in the drawing room at the request of Arthur Pembroke, who had returned from Penning with what he described as "an addendum of some importance." Charles was present for the first time since his illness, propped up on a chaise longue with a blanket over his knees, his face still pale and gaunt but his eyes sharp with suspicion. Margaret sat beside him, her hand resting protectively on his shoulder. Andrew stood by the window, a glass of soda water clutched in his hand—he had sworn off alcohol after his confession to Edwin, and the effort was clearly costing him. Clara sat in the wing chair by the fireplace, her posture elegant and alert.

Edwin took his usual place in the shadows, where he could watch them all.

Pembroke opened his briefcase with his customary fussiness and extracted a thin sheaf of papers. "I must apologize for not bringing this to your attention at the initial reading," he began. "The document in question was only discovered yesterday among your father's private papers, in a locked drawer of his desk. It appears to be a codicil, signed and witnessed, though not yet formally attached to the principal will. Its validity may be subject to challenge, but I am obliged to present it."

"Get on with it, Arthur," Charles said testily.

"The codicil establishes an additional condition. If, at the end of the twenty-four-month period, only one beneficiary remains alive and eligible, that beneficiary will inherit the entirety of the estate, as previously stated. However—" Pembroke adjusted his spectacles. "However, if at any point during that period, evidence emerges that the deaths of any of the other beneficiaries were the result of foul play committed by the surviving beneficiary, then the entire estate is to be forfeited. In that event, the Rutherford fortune will be liquidated and the proceeds donated to the Penning Institute for Toxicology and Public Health, a charitable foundation that your father established six months before his death."

A profound silence filled the room. Andrew's glass slipped from his fingers and shattered on the hearth.

"Toxicology," Clara murmured. "Father founded a toxicology institute."

"It would appear so. The institute's charter is dedicated to the study of food-borne toxins and the prevention of deliberate contamination in the food supply. A cause, it seems, that was close to your father's heart."

Edwin began to laugh. It was a quiet sound at first, barely audible, but it grew until it filled the room, until the others turned to stare at him with expressions ranging from bewilderment to alarm.

"Don't you see?" he said, when he could speak again. "He knew. Father knew. He knew someone was poisoning him, and he set this whole thing up—the will, the institute, the codicil—as a final joke. A final lesson. He's telling us from beyond the grave that if we play his game, we lose. The only way to win is not to play."

"That's one interpretation," Charles said slowly. "But the codicil also says 'evidence emerges.' It doesn't require a conviction. It merely requires evidence. Which means that if any of us wanted to eliminate the competition and still inherit, the solution would be simple: eliminate them, and then plant evidence pointing to someone else."

He looked directly at Edwin as he spoke. The accusation was unmistakable.

The days that followed were thick with tension, the atmosphere in Rutherford Hall growing as heavy and oppressive as the late-summer air. A cousin, Felix, arrived from the Alvonia estate, summoned by Margaret to serve as a neutral observer. Felix was a mild-mannered man of forty-two who had spent most of his adult life managing the family's continental holdings and had never shown any interest in the English side of the business. He seemed genuinely bewildered by the situation, and he made the fatal mistake of accepting a box of chocolates that arrived by post, addressed to "The Rutherford Family" in elegant copperplate script.

The chocolates were laced with arsenic. Felix was found dead in his guest room on the fourth morning after his arrival, his face contorted in a rictus of agony, the half-empty box still on his bedside table. The official cause of death was acute arsenic poisoning. The chocolates, the police determined, had been ordered from a confectioner in Dearnley, paid for with cash, and delivered by a private courier who could not be traced.

This time, there was no talk of mussels. Detective Inspector Hollis returned, this time with a team of constables and a forensic specialist from the county laboratory. The guest wing was sealed off. Statements were taken. The staff were questioned one by one. And for the first time, the name "Rutherford" began to appear in the national press, not as a byword for industrial success but as a synonym for something darker.

"Poison at the Manor," read one headline. "The Curse of Rutherford Hall."

Edwin observed the investigation with a strange, detached calm. He watched as the police searched the kitchens and the pantries and the greenhouse, looking for the source of the arsenic. He watched as they interviewed each family member in turn, their questions growing sharper, their patience wearing thin. And he watched as, one by one, his siblings began to crack under the pressure.

Andrew was the first to break. On the evening after Felix's body was discovered, he cornered Edwin in the library, his eyes wild and his breath sour with the whiskey he had resumed drinking. "It's her," he hissed. "It's Clara. It's always been Clara. The bottle I saw—the chocolates—the soup—she's trying to kill us all. We have to do something, Edwin. We have to stop her."

"Tell the police what you saw," Edwin said calmly.

"I can't. Don't you understand? If I tell them, she'll say I'm lying. She'll say I was drunk, that I imagined it. And if she's arrested, and the will is read, and she's convicted—" He broke off, the arithmetic of death too complicated for his whiskey-soaked brain.

"She would forfeit her share," Edwin finished for him. "Which would mean a larger portion for the rest of us. But if you accuse her and she is not convicted, you will have made an enemy of the one person who may, in fact, be innocent."

"Then what? What do we do?"

Edwin put a hand on his brother's shoulder. It was the first time he had touched Andrew in years, and the gesture felt foreign and cold. "Leave it to me," he said. "I'll take care of it."

He had no intention of taking care of anything. But the words soothed Andrew, who nodded gratefully and retreated to the library's drinks cabinet. Edwin watched him go, and he felt nothing at all.

Later that night, Edwin found Clara in the rose garden, exactly where Andrew had seen her on the night of the soup. She was standing by the fountain, her face upturned to the moon, her dark hair loose around her shoulders. She did not turn when he approached, though she must have heard his footsteps on the gravel.

"I wondered when you'd come," she said.

"You knew I would?"

"I hoped you would." She turned to face him, and in the moonlight her eyes were very dark, pools of shadow in a pale face. "We're alike, Edwin. We always have been. The two middle children, the ones who were never quite good enough. Charles was the heir. Andrew was the baby. We were the ones Father looked through as if we were made of glass."

"Is that why you did it?" Edwin asked. "The soup? The chocolates? Is that why you're killing them?"

Clara smiled, that cold, knowing smile that he had come to know so well. "What if I told you I've done nothing at all? What if I told you that someone else is playing this game, someone who wants us all to suspect each other while they pick us off one by one?"

"I would ask for proof."

"And I would ask you the same question." She stepped closer, close enough that he could smell her perfume, something dark and floral. "What if I told you that I know about the chemistry set in the attic? About the hours you spent as a boy, learning the properties of various compounds? What if I told you that the anonymous letter to the police was written by someone who wanted to draw attention away from themselves by pointing it at you?"

Edwin felt a chill that had nothing to do with the night air. "I would say that's a very convenient theory."

"Isn't it?" Clara reached up and touched his cheek with the tips of her fingers. Her skin was cold. "We could destroy each other, Edwin. We could spend the next two years waiting for the other to strike. Or we could come to an arrangement."

"What kind of arrangement?"

"A partnership." Her voice was barely above a whisper. "Whoever is doing this—and I swear to you, it is not me—will eventually make a mistake. When they do, we will be ready. And in the meantime, we protect each other. We watch. We wait. And when the game is over, we split the prize. Fifty percent of everything is better than nothing at all."

Edwin looked into her eyes, searching for the truth. He saw only his own reflection, distorted and dark. "Why should I trust you?"

"You shouldn't," Clara said. "But you should trust my self-interest. I need an ally. So do you. And of everyone in that house, you are the only one who is not a fool."

She kissed him then, a brief, cold pressure on his lips, and before he could react, she was gone, her footsteps fading into the darkness of the garden.

Edwin stood alone by the fountain, the moonlight silver on the water, and he thought about partnerships and trust and the slow, inexorable arithmetic of death. Clara was right about one thing: they were alike. They were both survivors. And survivors, in the end, did what was necessary to stay alive.

The next morning, a second letter arrived. This one was slipped under Clara's door sometime before dawn, printed on the same cream-colored paper, sealed with the same plain crimson wax. Clara brought it to Edwin in the library, her face white.

The message was shorter this time. Two words.

She's next.

Edwin read it, then read it again. "Someone knows about our conversation in the garden."

"Someone was watching." Clara's voice was steady, but her hands were trembling. "Someone wants us to know that we are not safe. That nothing we do is private."

"Or someone is trying to drive a wedge between us. To make you think I wrote this letter, or to make me think you wrote it yourself."

"Did you?"

"No." Edwin met her gaze. "Did you?"

"No."

They stared at each other, the letter between them like a loaded gun. Somewhere in the house, a clock struck ten, its chimes echoing through the corridors. And somewhere, Edwin thought, a killer was watching them, waiting for the moment when their trust would fracture and the real slaughter could begin.

He looked at Clara, and she looked at him, and neither of them spoke.

The mirror had cracked. The next blow would come from the shadows, and when it did, they would not see it until it was too late.