Ghost gritted his teeth, cursing silently as he found himself trapped in a cramped and cramped ventilation shaft. The metal walls felt close and constricting, and he could hear the sound of his own heavy breathing echoes around him. Suddenly, he heard a slight creaking noise from the other side of the shaft, signaling the presence of someone else.

"Who's there?" Ghost asked gruffly, pressing himself against the wall and straining his ears to listen for a response.