The document discusses representations of social groups in the thriller genre. It notes that male characters are often portrayed as secretly hiding something sinister beneath normal appearances. Women are commonly represented as obstacles for men to overcome and are frequently killed off. The main character in the discussed thriller, Brad, has several mental disorders and represents how those with disabilities can also pose harm despite common assumptions. Brad's experiences of abuse and neglect as a child are said to have contributed to his emotionally detached and sometimes aggressive behavior.