Margaret's voice became weaker.
"Your father told Elena that Daniel had survived the accident. He said he was being held somewhere safe until the investigation was finished."
"Was that true?"
"No."
"Then why did he say it?"
"Because he needed her to give him the key. And she wouldn't give it to anyone who believed her father was dead."
The room fell silent.
I felt something shift inside me.
For twenty-two years, I had imagined my father as a man who had been murdered because he tried to expose a corrupt company.
Now I was beginning to wonder whether he had also made terrible choices.
"Mrs. Ruiz," I said, "what happened to Elena?"
"She went looking for her father."
"Where?"
"To the river."
"What did she find?"
Margaret began to sob.
"Nothing. Just his coat."
Bennett asked her to explain, but she was no longer able to speak clearly.
Then, just before the call disconnected, she whispered one final sentence.
"Your father knows what happened to Daniel."
The line went dead.
I stood in the kitchen with the phone in my hand.
Outside, the afternoon light was fading.
Bennett slowly closed his notebook.
"That changes things," he said.
"Everything changes things."
He looked at me.
"We need to find Margaret before someone else does."
"She gave us no address."
"She gave us something."
"What?"
"The number she called from."
He checked the phone display and began writing.
I looked down at the drawing Patricia had found.
The house.
The river.
The square structure beneath the ground.
In the corner, almost hidden beneath the child's handwriting, was a tiny symbol.
A circle crossed by three lines.
I had seen it before.
In my father's notebook.
Beside the words:
THE SECOND ENTRANCE.
I turned the drawing toward Bennett.
"Look at this."
He studied it.
"Do you recognize it?"
"Yes."
"From where?"
I took out my father's notebook and found the page.
The same symbol appeared beside a series of coordinates.
Bennett compared the two images.
"That's not a house," he said.
"What?"
He pointed to the drawing.
"The square structure. Look at the lines. That's a pumping chamber."
I stared at the child's picture.
The drawing wasn't a child's imagination.
It was a map.
A map of the underground system beneath Briar Glen.
And the circle crossed by three lines marked a second entrance.
My father had written that the evidence was somewhere else.
He had also written that the chamber was never the only danger.
I finally understood the difference.
The pumping station was where people entered.
The drainage tunnel was where things disappeared.
And somewhere beneath the town, there was another door.
One that my father had spent twenty-two years trying to keep closed.
My phone vibrated.
An unknown number.
One new message.
Margaret told you too much.
I showed it to Bennett.
He immediately tried calling the number back.
It was disconnected.
Then another message appeared.
If you want the real key, come to the river.
A photograph followed.
It showed the riverbank at night.
On the far side stood a woman in a dark coat.
Her face was turned away from the camera.
In her hand was a small metal object.
A key.
Below the photograph were five words.
YOUR FATHER IS STILL WAITING.
I looked at Bennett.
He was already reaching for his radio.
But I couldn't move.
Because the woman in the photograph was wearing a necklace.
A small silver pendant shaped like a crescent moon.
I had seen it before.
In a photograph from my childhood.
My mother wore the same pendant on the day she told me my father had died.
And suddenly, I wasn't sure whether the woman standing beside the river was Elena Ruiz, Margaret Ruiz, or someone much closer to home.
For several seconds, neither Bennett nor I spoke.
The photograph remained on my phone, its pale figure standing beneath the trees on the opposite bank. The woman's face was hidden, but the silver crescent at her throat was unmistakable.
My mother had worn that pendant for as long as I could remember.
I had seen it in family photographs, in birthday pictures, and in the only portrait of my parents that still hung in her living room. It had been a gift from my father, she once told me. He had bought it at a roadside market during one of his inspection trips.
Now someone was wearing it beside the river.
"Call your mother," Bennett said.
I did.
She answered almost immediately.