It started with a sound.
Not loud. Just… a faint knocking from the wall.
At first, you thought it was a neighbor. Maybe someone moving furniture late at night. But then it came again. Three short knocks. A pause. Then three more.
You checked the time.
3:17 AM.
The same as last night.
You walked closer and pressed your ear against the wall. Silence.
Then… a whisper.
Not from the room. From inside the wall.
“Let me out…”
You froze.
Your apartment is on the top floor. No one above you. A