Parker is a psychological thriller film set in a high school. The filmmakers challenged conventions by setting a thriller in a school, which is uncommon. They introduced the main characters of Parker, a popular boy with psychotic tendencies, and Rachel, the object of his obsession. The opening establishes the school setting and Parker's growing obsession with Rachel through his extreme close-ups of her and scrapbook documenting her. Overall, the filmmakers aimed to attract their target 16-25 year old audience by including some comedy, sticking to thriller conventions like music and editing, and making the characters and setting relatable to those in high school.