Vincent returned twenty minutes later with two security vehicles behind him.
His first words were not about the power failure.
“Why didn't you answer?”
“I was trying to call you.”
He stopped.
“You called me?”
“Twice.”
His eyes moved to my phone.
“What happened?”
I told him about the smell.
Then the call.
“An unknown number?”
“Yes.”
“What did he say?”
“Stop asking questions.”
Vincent's face became hard.
He turned toward his security chief.
“Lock the property down.”
“It already is.”
“Then lock it down again.”
The chief understood.
Within minutes, every gate was checked, every guard was repositioned, and the east wing was isolated completely.
The boys were moved farther from the affected section.
Vincent stayed beside them until they fell asleep.
He sat in a chair near the door, watching both beds.
I had expected a billionaire to be surrounded by confidence.
Instead, I saw a father counting every breath his children took.
“You should sleep,” I said.
“I'll sleep when they're safe.”
“You've said that before, haven't you?”
He looked at me.
“What?”
“That you'll sleep when they're safe.”
He looked toward the boys.
“I don't remember.”
“You probably don't sleep much.”
He gave a tired smile.
“Not lately.”
The next morning, the toxicology report arrived.
The pediatrician came personally.
He placed a folder on the table.
“I need you to sit down.”
Vincent did.
I remained standing.
“What did you find?”
“There are markers consistent with prolonged exposure to an industrial solvent mixture.”
Vincent stared at him.
“What does that mean?”
“It means the boys have been exposed to chemicals capable of causing many of the symptoms you've described.”
“For how long?”
“We can't determine the exact duration.”
“Could it be eighteen months?”
“Yes.”
“Longer?”
“Possibly.”
Vincent's face drained of color.
“Can it cause permanent damage?”
“If exposure continues, yes.”
He looked toward the hallway.
“Then why didn't anyone find it?”
“Because the symptoms are nonspecific.”
Vincent said nothing.
The pediatrician looked at me.
“You noticed the environmental clue.”
I felt no pride.
Two children had been sick for eighteen months.
Noticing a smell should not have been remarkable.
It should have happened months earlier.
Vincent ordered the entire mansion tested.
Every room.
Every ventilation line.
Every water source.
Every cleaning product.
Every mattress.
Every chemical stored anywhere on the property.
The estate became a controlled examination site.
Workers in protective clothing moved through rooms where guests had once eaten dinner and children had once played.
The scale of the testing made one fact impossible to ignore.
Whatever had happened here had been carefully hidden.
The specialists eventually opened the ventilation shaft above the boys' bedrooms.
One technician stopped.
“There's something attached to the duct.”
Vincent stepped closer.
“What?”
The technician pointed.
A small metal canister was fixed directly to the airflow system.
It was not part of the original equipment.
The environmental specialist removed it carefully.
The residue inside matched the chemical mixture found in the boys' blood.
Vincent stared at the container.
“Someone put that there.”
“Yes.”
“Could it have been accidental?”
“No.”
“Why not?”
“It's designed to release material into the airflow.”
Vincent's face became expressionless.
I looked at him.
“Someone wasn't simply causing an accident.”
He nodded slowly.
“Someone was feeding something into the house.”
The realization seemed to take the strength out of him.
He walked away from the technicians.
I followed.
“You knew something was wrong with Isabella.”
He stopped.
“What?”
“Your wife.”
His shoulders stiffened.
“You said she had anxiety.”
“She did.”
“You said she complained about Dr. Blake.”
“Yes.”
“Then why do I have the feeling there is something you're not telling me?”
He stood silently for a long time.
Finally, he said, “Because I didn't believe her.”
We went to his office.
He closed the door.
“I thought Isabella was becoming paranoid.”
“Why?”
“She said someone was watching her.”
“Who?”
“Harrison.”
I waited.
“She said he was manipulating her medical records. She believed he was making the boys sick.”
The words seemed to echo.
“When did she tell you that?”
“Six weeks before she died.”
“And what did you do?”
“I dismissed it.”
“Why?”
“Because she had already been diagnosed with anxiety.”
“By Harrison.”
“Yes.”
I sat across from him.
“Did she investigate him?”
Vincent nodded.
“She secretly hired a private investigator.”
“What did the investigator find?”
“I don't know everything.”
“Try.”
Vincent rubbed his hands over his face.
“The investigator found irregular prescriptions. Medication that didn't make sense. Records that had been altered.”
“And?”
“I fired him.”
I stared at Vincent.
“You fired the investigator?”
“Yes.”
“Why?”
“I thought he was feeding Isabella's fears.”
“And the files?”
“I buried them.”
“Where?”
“I don't know.”
I leaned back.
“You spent millions searching for a medical explanation while ignoring the possibility your wife had already found one.”
His eyes filled with something close to shame.
“I know.”
“Did Isabella know you didn't believe her?”
“Yes.”
“What did she say?”
“She told me one day I would regret it.”
He looked at the photograph of his sons on his desk.
“I thought I had lost her because of an accident.”
His voice lowered.
“Now I'm wondering whether I helped create the conditions that led to it.”
Before I could respond, security called.
They had found another document.
The auxiliary ventilation system had been installed by a contractor that had dissolved shortly afterward.
The employee listed as site supervisor was Daniel Reed.
Vincent immediately ordered a search.
“Find him.”
“We're trying.”
“Try faster.”
The security chief left.
Vincent turned to me.
“There's something else.”
“What?”
“Isabella had a lawyer.”
“Name?”
“Margaret Sloan.”
“Call her.”
He did.
She answered quickly.
“Vincent?”
“I need everything Isabella gave you.”
There was a long silence.
Then Margaret said, “I wondered when you would finally ask.”
Vincent closed his eyes.
“You knew?”
“I knew Isabella was afraid.”
“Why didn't you tell me?”
“Because she specifically told me not to.”
“Why?”
“She believed someone inside your organization was watching you.”
Vincent opened his eyes.
“Who?”
“I never found out.”
“What did she leave?”
Margaret hesitated.
“A safe-deposit box in Manhattan.”
“What is inside?”
“I don't know.”
“Do you have access?”
“I have the key.”
“Bring it.”
“I can't.”
“Why?”
“Because Isabella's instructions were specific.”
Vincent stared at the phone.
“What did she say?”
“She said you were to receive the key only if you came looking for the truth yourself.”
The call ended shortly afterward.
Vincent sat very still.
“She knew I'd fail her,” he whispered.
I didn't answer.
He looked at me.
“I don't know whether that was trust or punishment.”
“Maybe both.”
That evening, we found an old photograph in the library.
I had been looking through a shelf near the back wall when a book shifted.
Something fell behind it.
A photograph.
I picked it up.
Isabella stood in the center, smiling.
Lucas and Leo were beside her, several years younger.
Healthy.
Bright-eyed.
Alive in the uncomplicated way children are when they haven't learned to worry about their own bodies.
Dr. Harrison Blake stood beside Isabella.
I turned the photograph over.
There was handwriting on the back.
I recognized Isabella's writing from notes and labels around the house.
If Vincent ever doubts me, show him this. Harrison knows why.
My hands went cold.
I carried it to Vincent's office.
He looked at the photograph.
Then he read the message.
His face changed.
“Where did you find this?”
“In the library.”
“I've never seen it.”
“Why would she write that?”
“I don't know.”
“Did she know something about Harrison?”
“I don't know.”
“Then tell me what you do know.”
He sat down.
“I wasn't a good husband.”
I waited.
“I traveled constantly. I built companies. Bought businesses. Sold them. I believed money could solve anything.”
His thumb moved slowly over the photograph.
“Isabella hated that life.”
“Did she want to leave?”
“Yes.”
“Did she threaten divorce?”
“Yes.”
“Did you stop her?”
“No.”
“Did she have evidence against Blake?”
“I don't know.”
“Did she meet someone before the accident?”
“I don't know.”
He stared at the photograph.
“But two weeks before she died, she told me someone was poisoning the boys.”
The room seemed to shrink.
“What did you say?”
“I told her she was imagining it.”
“Because of her diagnosis?”
“Yes.”
“And who diagnosed her?”
“Harrison.”
I stood.
“Then we need the files.”
Vincent nodded.
That night, he told me everything he remembered about the weeks before Isabella's death.
She had begun locking doors.
She checked her car before driving.
She stopped taking calls from unknown numbers.
She accused Harrison of monitoring her.
Vincent had interpreted all of it as anxiety.
Then she died.
He had buried the investigator's report and continued trusting the doctor who had been in their lives before and after the accident.
Now the hidden ventilation system had been discovered.
The boys' blood contained evidence of chemical exposure.
The device had been deliberately installed.
And Isabella had left a warning.
There was only one question left.
Who had put the device in the house?
The answer seemed to be waiting inside a Manhattan safe-deposit box.
The next morning, Vincent made arrangements to leave.
The boys would remain in a private medical facility under guard.
I would accompany him.
Before we left, I went upstairs one last time.
The east wing remained sealed.
I stood at the end of the corridor and looked at the two bedroom doors.
For months, perhaps years, someone had been able to enter this space without being noticed.
Someone had known when the boys slept.
Someone had known when they were home.
Someone had known enough to hide a device inside the ventilation system.
And someone had already called me.
I heard footsteps behind me.
I turned.
No one was there.
But on the floor outside Lucas's old bedroom was a small envelope.
My name was written across it.
Claire.
I picked it up.
Vincent's security team had not placed it there.
I knew because the paper was still warm.
Click Here to continue read next: PART4: A Secret Box in Manhattan Connects the Doctor to Vincent’s Inner Circle, and the Truth About Isabella Finally Begins to Surface
The New Nanny Notices a Strange Detail in the Mansion That Every Specialist Before Her Somehow Managed to Miss
Part 3 of 8
