The narrative heavily emphasizes the guilt and blame placed on working mothers like Marissa (Sarah Snook) and Jenny (Dakota Fanning) for balancing careers and childcare, portraying husbands as inadequate or aggressive while women bond over patriarchal burdens, with explicit dialogue articulating complaints like 'I'm the default parent' and questions about why everything is 'automatically my fault.' This moralizing feminist messaging is called out in reviews as pandering and condescending, distracting from the kidnapping mystery with capital-I issues like economic inequity intersecting with disability and addiction, often treated as red herrings. The adaptation adds a prominent physical disability to Peter's brother Brian (Daniel Monks), not present in the source novel, which the actor highlighted as exciting representation, alongside subplots involving a detective's nonverbal autistic son and diverse supporting roles like a Latino detective (Michael Peña) and Black business partner (Jay Ellis), fitting modern suburbia but expanding on the book's likely more homogeneous Irish setting.

One character undergoes a gender swap, and other changes streamline the plot but amplify thematic pressures on women. While these elements influence casting choices, character arcs, and dialogue, they integrate into the domestic thriller genre akin to Big Little Lies without dominating to the point of sacrificing entertainment value entirely; reception is mixed but generally positive on acting and twists, with minimal audience backlash beyond isolated complaints of ideological leanings.