Sleep Sister Sleep

A young woman, Harper, finds herself out of her depth and out of her mind. Stranded in a nightmarish subterranean city of Nilsville with no exit in sight, she will have to contend with the monsters, madmen, and malfeasants who inhabit its halls. What is this place? How did she get here? Who are the strange folks squatting about? Who is the One-Armed Bandit, and why is he stalking her?