C241 Why Haven't You Slept Yet?

When she finished drinking the water and was about to go upstairs, there was a sudden cracking sound from the door behind her.

The sound was especially clear in the quiet night, scaring Lauren.

It was already so late, and the butler and the servants had already gone to bed. Who could it be? Could it be a thief?

The hall was only lit by the night light, and the sound could not be heard