Chapter One:The Three Knocks
The first thing Elena Carter noticed about the mansion was that it was too quiet.
Not peaceful.
Quiet.
There was a difference.
The black car rolled slowly through the enormous iron gates, and Elena watched the estate appear through the tinted window. Tall cypress trees lined the driveway, their branches moving gently in the evening wind. Beyond them stood the Carter mansion—three stories of pale stone, enormous windows, dark balconies, and ivy crawling up the walls.
It looked less like a home and more like a place that had been waiting.
Waiting for her.
“Bienvenida a casa, señorita Elena,” the driver said.
(Welcome home, Miss Elena.)
Elena smiled faintly.
“Gracias.”
(Thank you.)
She turned back toward the window.
Santa Lucia.
Her family's ancestral city.
She had heard stories about it since she was a child, but she had never lived here. Her father had always said the city was too complicated, too old-fashioned, and too full of people who remembered things that should have been forgotten.
Now, at seventeen, Elena was finally back.
And this time, she wasn't returning as just another member of the Carter family.
She was the heiress.
Her father had recently announced that she would eventually inherit the Carter estate, businesses, and properties that had belonged to their family for generations.
Everyone had congratulated her.
Everyone except her grandmother.
Her grandmother had simply stared at her and whispered:
“Some inheritances are not gifts.”
Elena had never understood what she meant.
Until tonight.
The car stopped.
Her younger brother, Daniel, jumped out before anyone else.
“Finally!” he shouted. “I thought we'd never arrive.”
Elena laughed as she stepped out.
Their mother, Sofia, immediately warned him not to run.
“Daniel, slow down.”
“I am slowing down!”
“You're practically flying.”
Elena smiled.
For a moment, everything felt normal.
Her father stood near the entrance, staring at the mansion.
Michael Carter wasn't smiling.
Elena noticed.
“Dad?”
He looked at her.
“What?”
“Are you okay?”
His expression changed almost immediately.
“I'm fine.”
It was too quick.
Too rehearsed.
Before Elena could ask anything else, the front doors opened.
An elderly woman stood inside.
Her name was Mrs. Valdez, the caretaker of the estate.
She looked at Elena for several seconds.
Then she crossed herself.
“Dios mío…”
(My God…)
Elena frowned.
“Is something wrong?”
Mrs. Valdez looked at Michael.
Then back at Elena.
“You look exactly like her.”
“Like who?”
The old woman went silent.
Michael stepped forward.
“Mrs. Valdez.”
One word.
But Elena heard the warning in his voice.
The caretaker lowered her eyes.
“Welcome home, señorita.”
(Welcome home, Miss.)
That night, Elena couldn't sleep.
Her bedroom was enormous, with a balcony overlooking the gardens and an old fireplace decorated with strange carvings.
She had spent almost an hour unpacking before noticing something unusual.
A door.
It was located at the far end of her bedroom.
Small.
Dark.
Almost hidden behind a heavy curtain.
Elena walked toward it.
There was no handle.
Only a small metal plate engraved with a symbol.
A crescent moon surrounded by three stars.
She touched it.
Cold.
Very cold.
“Elena?”
She turned.
Daniel stood at her bedroom door.
“What are you doing?”
“Nothing.”
He walked closer.
“What is that?”
“I don't know.”
Daniel studied the door.
“That's weird.”
“Very.”
He shrugged.
“Maybe it's a secret passage.”
Elena smiled.
“Maybe.”
Daniel suddenly looked serious.
“Don't open it.”
Elena laughed.
“Why?”
“I don't know.”
He glanced at the door again.
“It just feels wrong.”
Before Elena could respond, their mother called him from downstairs.
Daniel left.
Elena stared at the strange door for another few seconds.
Then she walked away.
She went to bed at midnight.
At 2:17 a.m., she woke up.
Knock.
Her eyes opened.
She remained still.
Knock.
Her heart began beating faster.
Then—
Knock.
Three times.
Exactly three.
Elena slowly sat up.
The room was completely dark.
Her phone lay on the bedside table.
She reached for it.
2:17 a.m.
A notification appeared.
Unknown number.
Elena opened the message.
«DON'T OPEN THE DOOR.»
Her breath caught.
She stared at the screen.
Then came another message.
«Whatever you hear, do not answer.»
Elena slowly looked toward her bedroom door.
Nothing.
Then she heard footsteps.
Coming down the hallway.
Slow.
Heavy.
Step.
Step.
Step.
Elena grabbed her phone.
The footsteps stopped directly outside her room.
Silence.
Then a voice came from the other side.
“Elena?”
She froze.
It was her mother's voice.
“Sweetheart, open the door.”
Elena's fingers tightened around her phone.
“Mum?”
No answer.
Then the voice came again.
“Abre la puerta, Elena.”
(Open the door, Elena.)
Elena moved closer.
Her hand reached for the handle.
Then her phone vibrated.
Another message.
«THAT IS NOT YOUR MOTHER.»
Elena stepped back.
The voice outside changed.
“Please, Elena.”
Now it sounded like Daniel.
“It's me.”
Elena stared at the door.
Daniel was supposed to be asleep.
She whispered:
“Daniel?”
A pause.
Then the voice replied:
“Yes.”
Elena's blood ran cold.
Because at that exact moment, she heard Daniel's real voice.
From somewhere behind her.
“Who are you talking to?”
Elena slowly turned around.
Daniel was standing in the corner of her room.
His face was pale.
His eyes were fixed on the bedroom door.
He whispered:
“Elena…”
“What?”
“I didn't come in through the door.”
Her heart stopped.
“What do you mean?”
Daniel pointed behind her.
“I woke up in the hallway.”
He swallowed.
“And then I saw someone standing outside your room.”
Elena couldn't move.
“Who?”
Daniel shook his head.
“I don't know.”
The handle began to turn.
Slowly.
Elena grabbed Daniel's hand.
The door opened an inch.
Then two.
A shadow appeared beneath it.
Someone was standing outside.
Elena held her breath.
The shadow moved.
And then a photograph slid underneath the door.
The door immediately closed.
Elena stared at the photograph lying on the floor.
She slowly picked it up.
Her hands began trembling.
It was a photograph of her.
Sleeping in the exact bed