The knocking came again at 3:08 a.m.

Not loud. Not urgent. Just… steady.

One knock every six seconds.

I live on the twelfth floor.

No balcony. No fire escape. Just a single, sealed window — and yet the knocking always came from the glass.

I tried ignoring it the first night. Didn’t sleep.
Second night, I recorded it. There were knocks on the audio.
Third night, I covered the window in blankets. The knocking continued.

Tonight, I peeked.

There’s a face in the glass.

And it looks just like mine.