Miasto upadłych

The dark, tense mood really immerses the reader. I'm curious whether the author envisioned a specific real-world location or created a fictional one to enhance the suspense.

The characters often operate in gray areas, which made me question what I would do in their situations. How do others interpret the line between right and wrong here?

The shifting perspectives added layers to the mystery, but I'm wondering if this was planned from the start or if it evolved during writing to build suspense.