"Tap, tap, tap," footsteps sounded as Richard entered the Stone Building and approached the wooden staircase—A-233 was clearly on the second floor.
The staircase was carpeted, but it was so dirty that its original color was unrecognizable—a dark, filthy mass stained all over.
Richard stepped on it, pulling Pandora along as they ascended; he did not feel much softness underfoot but rather a sticky viscosity, as if walking on the surface of a mollusk. He involuntarily frowned, reminded of the giant octopus he had encountered at sea.
"Squeak, squeak," amid the eerie creaking of the wooden stairs, Richard reached the second floor and saw the narrow, cramped corridor. Because the walls were thick and the windows at both ends were especially small, only a bit of sunlight streamed in, casting gloomy shadows that added to the sinister atmosphere.
Richard's brow furrowed deeply as he pulled Pandora further down the corridor, eyes scanning the door numbers.