In Henning Mankell's novel "Faceless Killers," the protagonist, Wallander, experiences a unique perspective when entering unfamiliar spaces. He compares these apartments to book covers, each one telling a story through its layout, decor, and atmosphere. This metaphor highlights his investigative approach, where every detail serves as a hint towards understanding the lives of the inhabitants.

Wallander's journey into these residences symbolizes his relentless quest for truth. Just as a reader must delve into a book after observing its cover, Wallander must explore deeper—analyzing clues and unraveling narratives to solve the mysteries he confronts. Each apartment becomes a puzzle, inviting him to uncover its secrets and connect with the individuals who once lived there.