If you have reached this room, then the door has finally been opened.

Do not trust the hospital records. Do not trust the transfer documents. And do not assume that the man who returned home was the man who left.

The real evidence is beneath the river.

The person who knows how to reach it is the person who has spent the longest pretending not to know.

At the bottom was a name.

MARGARET RUIZ.

I looked at Samuel.

"Where is Margaret?"

He shook his head.

"She was here yesterday."

"Here?"

"In this house."

I turned to Claire.

"Your sister-in-law?"

"She isn't my sister-in-law."

"Then what is she?"

Claire stared at the paper.

"She's the woman who helped your father disappear."

We left Claire's house under police protection.

Samuel was taken to the hospital, where doctors confirmed that he was severely dehydrated and suffering from several untreated injuries. He refused to discuss how he had been confined, but he agreed to give a formal statement once he had recovered.

Bennett kept the letter.

I kept one sentence in my head.

Do not assume that the man who returned home was the man who left.

My mother had seen someone after the hospital.

She had believed it was my father.

But what if it wasn't?

What if the man who came home had been the operative?

And what if the real Robert Hale had never returned?

At the station, Bennett placed two photographs side by side.

The first showed my father standing beside Martin Cole in 1994.

The second showed the man beside my mother at the river.

"Look at the ears," Bennett said.

I leaned closer.

The men looked similar, but there were differences. The second man's jaw was narrower. His left ear had a small notch at the top.

My father had no such notch.

"Who is he?"

"We're checking."

"Could it be the operative?"

"Possibly."

I looked at the photograph again.

"Then where is my father?"

Bennett didn't answer.

His phone rang.

He listened for a few seconds, then stood.

"What happened?"

A pause.

"Where?"

Another pause.

"Don't touch anything. We're coming."

He hung up.

"Margaret Ruiz has been found."

"Where?"

"At the old ferry landing."

"Is she alive?"

Bennett picked up his coat.

"That's what we're about to find out."

PART TWELVE — THE WOMAN WHO KEPT THE RECORDS

Margaret Ruiz was sitting on the wooden platform when we arrived.

She was alive.

Her hands were tied in front of her, and a strip of cloth had been wrapped around her mouth. Her coat was wet, her hair disheveled, and her shoes were missing.

Two officers were beside her.

When she saw me, she began struggling against the restraints.

Bennett knelt and removed the cloth.

"Are you hurt?"

Margaret shook her head.

"Not badly."

"Who did this?"

She looked at me.

"Your father's friend."

I felt my stomach tighten.

"Which friend?"

"Martin Cole."

Bennett exchanged a glance with the other officers.

"Where is he?"

Margaret looked toward the river.

"He went underneath."

"Underneath what?"

"The old drainage entrance."

Bennett immediately called for additional units.

I crouched beside her.

"Why were you at Claire's house?"

"Because she has something that belongs to me."

"What?"

"The original ledger."

"Is it the evidence my father hid?"

She nodded.

"Your father gave it to Elena. Elena gave it to me. I kept it hidden for years."

"Where?"

Margaret looked toward the warehouse.

"Somewhere Martin cannot find."

"Why did he take you?"

"He wanted the ledger. He believed I knew where the real key was."

"Do you?"

She looked at me for a long moment.

"Yes."

I waited.

"Where is it?"

"Your mother has it."

I felt the blood drain from my face.

"My mother?"

"She has carried it for twenty-two years."

"Why didn't she tell me?"

"Because she was protecting you."

"From Martin?"

"From the man who wears your father's face."

I looked toward Bennett.

He had stopped speaking into his radio.

"What man?" I asked.

Margaret took a shaky breath.

"The man who came home on October nineteenth. The man who told your mother he was Robert Hale."

"Who was he?"

"His name was Adrian Cross."

I recognized the name from nowhere.

"Was he the operative?"

"Yes."

"Then where was my father?"

Margaret's eyes filled.

"He was still at Northfield."

I felt something break inside me.

"Did he die there?"

"No."

"Where is he now?"

She looked toward the river again.

"That is what Martin has been trying to find out."