All the Other Mothers Hate Me is a domestic mystery thriller that satirizes upper-class, bourgeois London society from the perspective of an American who grew up in a working-class home. The novel frames this upper-class society as a collection of absurd, status-obsessed people who use their polite manners to mask their immoral and impolite actions. This closely observed satire is inspired by American author Sarah Harman’s life in London. As she writes, “The setting was shaped by my own experience as an American trying to wrap my head around the frankly bonkers world of West London private schools […] (Harman, Sarah. “Sarah Harman Introduces All the Other Mothers Hate Me.” HarperCollins Reach, 16 Feb 2025). British society is notoriously class-stratified: Class is a defining factor in community, culture, and opportunity as noted in the annual British Social Attitudes report (“40 years of British Social Attitudes: Class identity and awareness still matter.” National Center for Social Research, 21 Sept. 2023). The minor characters in the novel represent different archetypes of this rarified, upper-class world, while the protagonist, Florence, sits in judgment as an outsider.

Harman depicts the titular “other mothers” as heightened stereotypes of this elite culture. The social climbing Hope Grüber, who once “ran in the same circles” (10) as Florence, but who left that life behind by marrying an elderly, wealthy racist to secure herself “a baby blue Bentley with custom BOY-MUM plates” and a “chalet in Verbier [a Swiss ski station]” (10). Despite her marriage, Hope doesn’t “fully pass a member of the ‘quiet luxury’ set” (10) like Cleo, who married “the heir to a frozen food fortune” and is “some kind of artist” whose “work consists solely of chain-smoking outside various galleries” (11). Allegra represents the epitome of the old-money wealth that sustains St. Angeles, “a 150-year-old, all-boys prep school” (7). Her wealth is denoted, in part, by her expensive but understated clothing. She sports “Hermès riding boots [and] a green wax Barbour jacket” (7). Throughout the novel, Harman uses brand names to indicate class status: Florence shops at Primark, an inexpensive clothing store, while the wealthy characters flash Patek Phillipe watches and Lululemon yoga wear.

The author also emphasizes the ways London's geography is stratified by class. Florence lives in Shepherd’s Bush, a central London neighborhood, in a Victorian house that has been converted into a duplex. Shepherd’s Bush represents a borderland between the wealthy and working class, just like Florence herself. As she walks her son to St. Angeles, the neighborhood transforms from “familiar chicken joints and betting shops” to “organic butchers and natural wine stores” and finally to “grand white mansions” (142). In Chapter 5, Florence goes to Notting Hill, the wealthy neighborhood made famous by the film of the same name. Florence feels shocked and alienated by her interactions with the women there. Later, Florence goes to a housing estate [a semi-public housing project] in Camden, a working-class neighborhood, where she feels much more at home—a reflection of her childhood growing up in central Florida as the child of a Denny’s waitress. In All the Other Mothers Hate Me, London geography maps to the class geography that Florence must navigate to solve the mystery.