The protagonist, Wallander, reflects on the existence of malicious circumstances and environments that can lead to evil acts, rather than viewing evil as an inherent quality. He contemplates the deeper motivations behind certain actions and senses a profound darkness within the mind of another character, Svedberg.
In this moment of introspection, Wallander's investigation leads him to examine the complexities of human behavior and morality, challenging the notion that evil is solely a product of individual choice. The reference to Svedberg's pocket calendar suggests a meticulous aspect to the character, hinting at greater plans or darkness that Wallander must confront.