1) The film portrays the victim as normal and innocent, but the background story reveals she killed the stalker's parents when he was 10 and framed him, causing him to be institutionalized.
2) Both the victim and stalker become isolated from society as the stalker escapes and the victim becomes paranoid of his return.
3) The film portrays the stalker in the opening as very isolated and creepy, similar to thrillers like "Seven," using darkness, mis-en-scene, and keeping his face unseen to emphasize his isolation and strange nature.