The document discusses how the author's thriller represents certain social groups through its characters and plot. The main characters, a married couple named Jack and Lilly, conform to stereotypical gender roles - Jack is portrayed as dominant and secretive, hiding his real job as a hitman, while Lilly is innocent and naive, unaware of her husband's double life. These decisions were meant to give the audience what they wanted based on surveys. The thriller also suggests that older people are more likely victims, and that the villain will be a younger man portrayed in a dangerous light.