The opening sequence of the film establishes a mood of mystery and suspense. Scenes show titles fading in and out, a close-up of a drop of blood on a cloth, and an empty icy landscape seen from a helicopter to convey a sense of loneliness. A character is shown rubbing an unknown object being reflected in a mirror, increasing the sense of mystery. The first character, a middle-aged man with fatigued eyes, is introduced with an extreme close-up on his eyes. Props of a murdered woman and a newspaper article about a homicide investigation further set up the plot. A long shot of a plane flying into fog symbolizes the characters embarking on an investigation with an unclear outcome.