Noah flinched.

I put the car in drive.

Mark stepped aside.

I didn’t stop until the house disappeared behind us.

Then Noah reached into his backpack.

“I got something.”

He handed me my phone first.

There were six photographs.

The first showed Mark’s desk.

The second showed a small glass bottle with no label.

The third showed a sheet of yellow legal paper.

Three lines were written in black ink.

“19:30. Tea.”

“19:50. Effect.”

“20:10. Call 911.”

My hands tightened around the steering wheel.

Then Noah pulled something else from his backpack.

A plastic grocery bag wrapped around a dish towel.

Inside it was the white ceramic cup.

I stared at him.

“Noah.”

“I dumped the tea in the sink.”

“You touched it?”

“Only the handle. I used napkins.”

“Why did you take it?”

He looked down at the cup.

“Because on those crime shows, they always need the evidence.”

Under any other circumstances, I might have laughed.

Instead, I reached across the console and held the back of his neck.

“You did good.”

Then I called 911.

Mark Came to the Police Station Looking Worried

I didn’t go home.

I drove straight to a police station in Austin and called Javier Salgado from the parking lot.

Javier had handled the probate work after my parents died. He was calm, practical, and one of the few people outside my hospital who knew exactly what property I owned.

He arrived forty minutes later.

By then, Noah and I had already spoken with an officer.

I handed over the cup, the photographs, and my phone.

Javier listened without interrupting.

When I finished, he asked one question.

“Does Mark have access to your house, accounts, or insurance documents?”

“Yes.”

“We fix that tonight.”

Mark arrived before we finished.

Evelyn came with him.

He looked exactly like a worried husband should look.

His shirt was untucked. His hair was messy. He hurried toward me until an officer stopped him.

“Valerie, thank God.”

I said nothing.

“What is happening? Why did you take Noah and disappear?”

The officer asked him to sit down.

Mark did.

Then he started explaining.

I had been under stress.

Hospital work was exhausting me.

I had become suspicious lately.

Noah had apparently overheard a conversation about one of Evelyn’s elderly friends who took heart medication.

“My wife is a doctor,” Mark said. “She knows how dangerous it is to jump to conclusions about medication.”

Javier looked at me.

I kept quiet.

Then Noah spoke.

“That’s not what you said.”

Mark turned.

“Buddy—”

“Don’t call me that.”

Mark stopped.

Noah sat beside me with his hands tucked between his knees.

“You said twenty minutes after Mom drank it, it would start working.”

Evelyn looked at Mark.

Noah continued.

“Then you said you’d wait before calling 911.”

Mark shook his head.

“You misunderstood.”

“And who’s Lydia?”

Mark’s face changed.

Barely.

But everyone in that room saw it.

I turned toward Noah.

“Who is Lydia?”

“The lady Mark took me to see.”

“When?”

“Twice.”

I looked at Mark.

He looked at the floor.

Noah said, “He told her I might have to stay there for a long time someday.”

I felt Javier’s hand touch my arm.

Mark stood.

“This is ridiculous.”

An officer told him to sit down.

“He’s eleven,” Mark snapped. “You’re treating an eleven-year-old like a reliable witness to adult conversations.”

Noah looked straight at him.

“I’m eleven, not deaf.”

Mark sat down.

That was the first moment I saw fear on his face.

Not panic.

Calculation.

A few hours later, preliminary testing on residue from the cup came back.

The officer who spoke to us kept his voice low.

“We found digoxin.”

As a physician, I knew the name immediately.

In the wrong dose, it can cause dangerous cardiac rhythm disturbances.

The officer continued.

“The amount we’re seeing is not consistent with accidental residue.”

I looked at the white cup sealed inside an evidence bag.

Sunday dinner had ended hours earlier.

But there it was.

The cup I had been expected to empty.

And for the first time that night, Mark was no longer the person asking questions.

He was the person being detained.

There Had Been Two Wives Before Me

The search warrant was executed before sunrise.

Police found the small bottle Noah had photographed.

They found the handwritten schedule.

They seized Mark’s laptop.

I learned most of this while sitting in a hotel room with Noah asleep beside me, still wearing yesterday’s clothes.

Javier had arranged for the locks at my house to be changed.

My bank had restricted access to several accounts.

I kept staring at the hotel coffee maker.

I couldn’t bring myself to make tea.

Two days later, an investigator named Detective Hannah Price asked me to come in.

She placed two photographs on the table.

Both were women.

“Do you recognize either of them?”

“No.”

She touched the first.

“Alyssa Sterling.”

Then the second.

“Brooke Sterling.”

I looked at her.

“Sterling?”

“Mark’s former wives.”

I knew Mark had been married once.

He had told me his first marriage ended years earlier and that his ex-wife had died later from a medical problem.

He had never mentioned Brooke.

“Both are dead?”

“Yes.”

Alyssa had died eight years earlier.

Brooke had died four years after that.

Both were under forty.

Alyssa’s death had originally been attributed to sudden cardiac complications.

Brooke died after what investigators believed was an accidental medication interaction.

Mark received money after both deaths.

Property.

Insurance.

Investment accounts.

I sat back.

“You think he killed them.”

Detective Price didn’t answer immediately.

“I think we need to look at both deaths again.”

She opened another folder.

“There’s something else.”

Mark’s laptop had been encrypted.

Once investigators gained access, they found folders.

Alyssa.

Brooke.

Valerie.

My folder existed before our first official date.

Inside were photographs of me leaving the children’s hospital.

Photographs of my car.

A picture of me at a charity fundraiser.

Another of Noah walking beside me.

Then Detective Price showed me a document.

At the top was my name.

Below it were short notes.

Occupation.

Estimated income.

Property.

Family status.

Insurance potential.

At the bottom:

“Ideal target. Pediatrician. Divorced. Independent real estate assets. 11-year-old son: manage asset transfer.”

I stared at the words until they blurred.

“When was this created?”

She gave me the date.

Three months before I met Mark.

I remembered meeting him at a hospital foundation fundraiser.

Evelyn had introduced us.

She had touched my arm and said:

“My son is going to love you.”