L'homme chauve-souris

Jo Nesbø’s storytelling keeps the reader on edge, but I wonder what techniques he used to maintain that suspense throughout the novel.

The characters often operate in moral gray areas, which made me question what I would do in their place. Was that intentional to evoke empathy?

The atmosphere feels so specific and atmospheric—was the setting based on a real place or purely fictional? How did that influence the story's tone?