Mara stood at the top of the hidden staircase.

Below her, the final door waited in the darkness.

Her mother stood beside it.

Alive.

Older than the woman Mara remembered, but unmistakably her mother.

For a moment, neither of them spoke.

Then Mara whispered, “Mom.”

Her mother covered her mouth.

Tears filled her eyes.

“Mara.”

Mara started down the stairs.

Elias grabbed her arm.

“Wait.”

She turned.

He looked terrified.

“Something is wrong.”

Mara nodded.

“I know.”

Her father stepped forward.

“She’s telling the truth.”

Mara looked at him.

“You knew?”

“I suspected.”

Her mother looked toward the final door.

“Listen to me carefully.”

Mara stopped.

“The voice you heard wasn’t mine.”

“I know.”

“It has been using my memories for years.”

“Why?”

“Because it needs a human mind to exist.”

Mara looked at the door.

“The creature.”

Her mother nodded.

“It was created from memories.”

“Whose?”

“Mine.”

Mara stared.

Her mother continued.

“Twenty years ago, the researchers wanted to prove that memories could survive outside the human brain. They used my memories first.”

“And it worked.”

“Too well.”

Her mother’s voice trembled.

“The experiment created something that could think.”

“The creature.”

“Yes.”

Mara looked at Elias.

“And you knew?”

“I knew part of it.”

Her father lowered his head.

“We all did.”

Mara felt anger rising.

“You lied to me for twenty years.”

Her mother nodded.

“I did.”

“Why?”

“Because the creature couldn’t reach you if you forgot.”

Mara remembered the strange sentence from the file.

Memory suppression successful.

“You erased my memories.”

“Yes.”

“Why did I start remembering now?”

Her mother looked at the silver moon bracelet.

“Because I gave you the key.”

Mara touched it.

“The bracelet.”

“Yes.”

“The moon symbol.”

Her mother nodded.

“The moon represents memory. It has two sides. One remembers. One forgets.”

Mara looked toward the final door.

“And the door?”

“It separates memory from reality.”

A deep sound came from behind the door.

Boom.

The staircase shook.

Her mother stepped backward.

“We don’t have much time.”

“What happens if it opens?”

“It enters your mind.”

Mara’s stomach tightened.

“And if it enters?”

“It becomes you.”

Silence.

Mara finally understood the photographs.

The creature wasn’t trying to kill her.

It was trying to replace her.

She looked at Elias.

“How do we stop it?”

Elias reached into his coat.

He pulled out an old metal box.

Inside was a small black key.

“The original researchers built a failsafe.”

Mara stared at it.

“What does it do?”

“It destroys every stored memory inside the house.”

Her mother looked at him.

“That includes me.”

Mara’s eyes widened.

“What?”

Her mother smiled sadly.

“I’ve survived here because my memories are connected to the house.”

“If you destroy them…”

“I disappear.”

Mara shook her head.

“No.”

“There is no other way.”

“There has to be.”

Her mother stepped closer.

“You came here because you wanted answers.”

“I wanted you.”