She had already discovered signs that Derek was carrying substantial debts connected to an unsuccessful property investment.

The figures were alarming, but they explained only part of the desperation I had heard in his voice during the previous months.

He had invested heavily in a development that failed to produce the returns he promised himself.

As lenders demanded payment, he apparently became increasingly convinced that my wealth was the solution to his problems.

I remembered an argument in my kitchen when Derek asked me for another large loan.

He had described the request as temporary assistance and assured me that his financial difficulties would disappear once a planned sale was completed.

I had refused because he still owed money from an earlier loan and would not provide complete records of his business.

He slammed his hand against the counter and accused me of caring more about numbers than family.

Amanda had stepped between us with a smile that made the insult feel almost polite.

“Margaret, you can’t take it with you.”

I had answered that I intended to use my money responsibly while I was alive.

Her smile disappeared.

I realized now that the conversation might have been the moment they stopped thinking about asking and began thinking about taking.

Still, I struggled to believe that financial pressure alone could make Derek choose murder.

I had known people who lost businesses, homes, marriages, and years of work without deciding another human being should die.

Money could explain why my son felt desperate.

It could not excuse what he had done.

Leah showed me another record indicating that Derek had recently consulted an attorney about the administration of an estate after a parent’s death.

That consultation was not necessarily unlawful, but its timing raised questions when placed beside the documents prepared before the lake trip.

I stared at the dates until they blurred.

Every new detail made the attack seem less impulsive and more deliberate.

It was easier to imagine Derek making a terrible decision under Amanda’s pressure than spending weeks preparing for his mother’s death.

Yet I was beginning to understand that my imagination had protected him for too long.

That afternoon, Detective Ortiz returned with photographs taken during the recovery of the wheelchair.

The metal frame was coated in lake sediment, and one footrest had twisted when the chair struck the submerged structure.

The black restraint was still attached.

I stared at the photograph, remembering exactly where the fabric tightened around my leg.

The detective explained that the restraint had been secured in a way that required closer examination to determine whether it had been deliberately altered.

She did not promise the photographs would prove attempted murder.

But she confirmed that investigators were preserving the entire wheelchair as evidence.

Then she showed me a still image from Sam’s camera.

It was grainy, distant, and partly obscured by tree branches moving in the wind.

I could see the outline of my wheelchair and two figures standing near the end of the dock.

The image was not sharp enough to show their faces clearly, but I recognized Derek’s dark coat and Amanda’s pale scarf.

My hands began trembling again.

“That’s them.”

Detective Ortiz nodded.

“The camera records at intervals, and we are reviewing what it captured.”

The next still showed Derek moving behind my wheelchair while Amanda stood to one side.

The following image was mostly obscured by a branch, and the wheelchair was no longer visible in the clearest part of the frame.

I felt frustration rise inside me.

“Doesn’t it show him pushing me?”

“We’re working with what we have.”

I looked at the screen, desperate for one image that would make argument impossible.

The detective explained that supporting evidence could include the timing of the trip, the statements they had prepared, the wheelchair, and any reliable recordings.

I knew she was right, but I wanted to see Derek’s hands on those handles.

I wanted proof clear enough that nobody could turn his choice into another symptom of my supposed confusion.

When she put the photographs away, I asked whether Derek had learned that I survived.

“He knows you’re alive.”

The room seemed to shrink around me.

“How did he react?”

Detective Ortiz paused.

“He asked whether you were hurt.”

For one absurd instant, the question made me want to cry with relief.

Then I remembered why I was injured.

“Did he admit what he did?”

“No.”

I watched the detective close her notebook.

“He’s maintaining that you moved toward the water yourself.”

I turned my face toward the window.

The last faint hope that Derek might immediately confess had vanished.

He knew I had survived, knew I could identify him, and still chose the lie he had prepared.