THE MAFIA BOSS'S FIANCÉE INSISTED HIS YOUNGER SISTER WAS SAFELY VISITING BOSTON—BUT WHEN HE FOUND ISABELLA'S HANDWRITTEN WARNING INSIDE HIS MOTHER'S LOCKET, HIS FACE LOST ALL COLOR.

By morning, the Moretti mansion seemed unfamiliar. Without the party flowers and music, the dining room looked like the place where a terrible performance had ended and everyone had finally gone home.

I was due in the servants' kitchen at seven. Instead, Mrs. Ortega called to tell me that Luca had instructed the household to take the morning off while investigators finished documenting the west sitting room and ballroom. She added that our wages would be paid and nobody was expected to answer questions without being allowed to rest, obtain representation, or make a statement in their own words.

That last part mattered to me. I'd been standing near the movers yesterday, and I'd already begun imagining a lawyer twisting my words into something I hadn't said.

I went to the hospital at ten, after speaking with my mother and making sure her medicine had been delivered. I did not go because Luca ordered me to. I went because Isabella had once remembered my birthday when almost everyone else in that house had forgotten it, and because she'd called for my help in a way I couldn't forget.

Isabella was sitting upright in a private room with a blanket over her knees. A narrow bruise marked her forehead. Her voice was hoarse but clearer than it had been inside the truck. Luca sat beside the window wearing the same charcoal shirt he had worn beneath his jacket the night before. He looked as if he hadn't slept.

“Emma!” Isabella smiled when she saw me. Then her eyes filled with tears. “I told them you'd understand.”

I crossed the room slowly, uncertain whether I should embrace her. She held out her hand, so I took it.

“I'm glad you're safe.”

“I'm sorry I frightened you.”

“You didn't. Somebody else did.”

She laughed once, without humor. “That's a distinction my brother is struggling with.”

Luca lowered his eyes. “I'm struggling with the fact that you were missing for three days and I accepted Vanessa's explanation.”

“Then maybe you'll listen to me before you listen to her next time.”

“I will.”

Their exchange made me look away. It was too intimate to witness, this old injury between a brother accustomed to controlling events and a sister who had been trying to tell him something important.

A woman entered carrying a legal pad. She introduced herself as Naomi Brooks, an attorney Isabella had requested through the hospital's patient advocate. She worked independently of the Moretti family businesses.

“Isabella has agreed to tell us what happened,” Naomi said. “But the details belong to her. Anyone may step out if she wants privacy.”

Isabella asked me to stay.

“Three days ago,” she began, “I found a ledger in Mother's old papers. It had dates from the year she died and a list of payments from Vincent Bellini's company. I knew Luca had trusted him for years. I thought if I showed my brother the papers without understanding them, Vincent would say I was being foolish.”

“You could have shown me anyway,” Luca said.

“I tried. Twice. Your office said you were in meetings.”

He didn't defend himself.

“Vanessa called and offered to introduce me to someone who could explain the records,” Isabella continued. “She said the accountant worked with Mother's foundation when I was small. I went to an office near the river. Vincent was there. So was a notary I'd never met.”

Naomi turned a page. “Did you know beforehand that a notary would be present?”

“No. Vincent said Mother had left instructions about a property trust. He wanted me to sign what he called a routine release. I asked for time to read it. He told me Luca had already agreed.”

She looked at her brother.

“Did you?”

“No.”

“That's what I thought. So I refused.”

Isabella swallowed water and waited until her hand stopped shaking.

“They took my phone. When I tried to leave, a man blocked the door. I remember driving for a long time, then a room without windows. They kept asking where the seventh piece was.”

“The seventh keytop?” I asked.

“Not exactly. Mother called it her seventh key. The six others were part of a cipher she taught us when we were little. Vincent thought they were valuable because they were ivory. But he knew one was different. He'd been searching the bench for it.”

My thoughts returned to the blue flower carved beneath the seventh key.

“What did he want you to sign?” Luca asked.

“A release transferring management of Mother's music foundation to a Bellini-controlled company, and a statement that I had no objection to selling Ashgrove Hall.”

Luca went very still.

Ashgrove Hall. Even I knew the name. Elena Moretti had founded a school there for children whose parents couldn't afford music lessons. Since her death, a nonprofit had operated the building with support from the Moretti estate. I had seen photographs of children playing violins beneath high arched windows. At Christmas, several young musicians performed in the mansion's garden.

“Why sell Ashgrove?” Luca asked.

“Because Vincent has buyers ready to develop the property.” Isabella looked at Naomi. “And because whatever Mother left in that piano could stop him.”

Naomi asked about the truck. Isabella remembered being taken from the windowless room the previous evening. She had been told that if she stayed quiet, she'd be brought to an airport and sent somewhere safe until the wedding was over. She knew the claim was absurd. Before being placed inside the cabinet, she managed to retrieve her phone from a bag on the vehicle floor. She called her brother but couldn't speak before the driver started moving. The phone rang when Luca tried to reach her, and she used it to make noise.

“I heard you call my name,” she said. “I couldn't believe you were outside.”

Luca put his hand over hers. His face was pale.

“Who was in the room where they held you?” Naomi asked.

“Vincent visited twice. Vanessa once. The driver seemed frightened of both of them. Another man brought water. I don't know his name.”

“Did anyone give you medication?”

“I tasted something odd in tea. I stopped drinking it. I can't say what it was.”

Naomi nodded. “The doctors can assess that. You don't need to speculate.”

For the first time since I'd arrived, Isabella looked relieved that somebody wanted accuracy instead of an immediate dramatic answer.

“What about the locket?” I asked. “Why did Vanessa put it beneath her glass?”

“Because she thought she'd found the hiding place. I slipped it into the bench after I copied Mother's note. She must have searched it once I disappeared.”

“You copied the note?” Luca asked.

“Part of it. The rest was still folded inside.”

Naomi permitted us to read a photograph of the note. It was written on paper that had yellowed at the folds. Elena's handwriting was unusually small. It referred to seven white keys, a blue flower, and a phrase that made no sense to me: Where the song cannot sound, truth can still be heard.

Luca touched the edge of the phone screen. “Mother said that when she practiced with Isabella.”

“I remember,” his sister whispered. “I used to play one note wrong. She'd tell me the quiet part mattered too.”

An uncomfortable silence followed. Luca stood and walked to the window.

“Isabella, I need to ask something. Did Mother tell you anything about Ashgrove before she died?”

Isabella looked toward me, then Naomi.

“She made me promise not to let Vincent turn it into a hotel. She was ill, and I was nineteen. I thought she was afraid I'd forget her music.”

Luca closed his eyes.

I knew little about Elena's death. The staff spoke of a lung illness that followed a fire at Ashgrove Hall seventeen years earlier. She had been helping children leave the building. After weeks of treatment, she came home, but never recovered. Luca, who was twenty then, had taken over more of the family business while his father dealt with the loss.

“Was that fire connected to the ledger?” I asked.

Isabella nodded. “The dates begin the day before it.”

Luca turned. “I was told the fire was caused by an electrical fault.”

“That's what we were all told,” she replied. “Mother kept the original inspection records. Someone has been using the foundation's money to silence people ever since.”

The room seemed to shrink around us.

I remembered an image in the library: Elena standing with the children of Ashgrove, her hands resting on a piano. Everyone smiled at the camera. A little boy at the front held his violin upside down. I had dusted the framed photograph without ever considering what happened after it was taken.

A nurse came to check Isabella's blood pressure and asked us to give her time to rest. Naomi gathered her notes. Luca told his sister he would arrange a proper conservator to inspect the piano, and a lawyer experienced in nonprofit property law to review the Ashgrove papers. Isabella insisted the nonprofit's own board have counsel not paid by him.

“It's Mother's school,” she said. “It isn't your private drawing room.”

He accepted the correction without argument.

In the corridor, I asked Luca whether he thought Vincent had caused the fire.

“I don't know,” he said. “I know I've accepted his version of too many things.”

He looked at my hands, rough from years of polishing and carrying trays.

“You were the person who paid attention when my sister asked for help. I didn't.”

“You didn't hear what I heard,” I said.

“She tried to tell me.” He breathed out slowly. “I chose not to make time.”

There was no answer I could give him that would make that true less painful.

On the way home, I passed Ashgrove Hall. Children were filing out through its red front doors, carrying music cases. A little girl struggled with a cello nearly as tall as she was. A man held the door for her, and she smiled up at him.

Above the entrance, carved into the stone, were words attributed to Elena Moretti: A child should never have to earn the right to be heard.

I sat on the bus while it waited at the crossing and looked at those words until the building disappeared behind us.

Someone had tried to take Isabella away because of a signature. Someone had damaged her mother's piano looking for a secret. And an old fire, buried beneath seventeen years of polished family history, was beginning to rise again.

I thought about going home and leaving the investigation to people who could afford it. Then I remembered Vanessa's five hundred dollars on the table, offered in exchange for my silence.

It was more money than I had to spare.