The opening sequence of the Halloween film is shot entirely from the point of view of the killer. This builds tension and mystery as the audience does not see the killer's face. The killer enters an ordinary family home at night, collects a knife, and kills a teenage girl while her boyfriend is upstairs. The film is set on Halloween night in 1963 in Haddonfield, Illinois, establishing it as a horror genre film centered around the holiday. The audience is left with several questions about the killer's identity and motives.