Margot is a former teenage pop star whose public image was ruined after the media labeled her a "homewrecker" for having an affair with her current husband, Nicu. She lives in a suburban town with Nicu and her two stepchildren, Frankie and Tommy. Deeply image-conscious and hungry for external validation, she projects a judgmental persona and often belittles her meek neighbor Anna. Despite her arrogant exterior, Margot harbors deep insecurities, especially when confronted with the wealth and sophistication of the neighborhood's newest arrival, Liv.

Anna is a timid woman who lives next door to Margot and runs a modest homemade jewelry business. She presents a meek demeanor, often absorbing Margot's frequent insults and condescension without complaint. She shares her home with Drew, whom she presents to the community as her husband, and she appears eager to please those around her. Beneath her docile surface, Anna struggles with severe mental health issues related to a tragic past, causing her to hear intrusive voices in her mind that urge her toward violence.

Liv is a wealthy newcomer who moves to the neighborhood from London with her husband, Brandon, and their twin children. She prepares to open a high-end wellness studio, presenting herself as the picture of suburban sophistication. She quickly takes a dislike to Margot's arrogant behavior and actively works to diminish her, while simultaneously taking the gentler Anna under her wing. Behind her polished exterior, Liv secretly financed her luxurious lifestyle through the production of explicit internet content and calculated blackmail.

Nicu is Margot's husband, who first met her when they were partners on a reality television dance show. At the time they met, he was involved with his girlfriend, Ioana, and raising two young children with her. He hastily married Margot as a damage-control tactic when their affair was leaked to the press. In the present, he works to maintain their family unit, though he often finds himself frustrated by Margot's excessive spending and self-centered decisions.

Drew shares a home with Anna and is introduced to the suburban community as her husband. He struggles with an unhealthy dependence on alcohol, which often creates friction in his home life. He acts highly protective of his and Anna's privacy, displaying intense anger when he discovers evidence of her ongoing self-harm and her developing rapport with Margot.

Brandon is Liv's good-looking, supportive husband who previously worked as a personal trainer. He embraces Liv's unconventional methods of making money, having actively participated in the creation of their online content when their finances were tight. He focuses on raising their twins and helping Liv realize her dream of opening a wellness studio.

Frankie is Nicu's thirteen-year-old child and Margot's stepchild. Exploring a nonbinary identity, Frankie frequently clashes with Margot, who fails to understand or respect their gender expression. Frankie carries the trauma of losing their mother, Ioana, at a very young age and seeks out supportive adults, finding unexpected comfort in conversations with Liv.

Tommy is Nicu's younger child and Margot's stepchild. Like Frankie, Tommy lost his biological mother, Ioana, when he was just a toddler. He lives in the chaotic suburban household managed by Nicu and Margot.

Ioana is Nicu's deceased ex-girlfriend and the biological mother of Frankie and Tommy. When Nicu's affair with Margot became public, Ioana went to the press to brand Margot a homewrecker. She died tragically after falling from her fifteenth-floor apartment, an event that casts a permanent shadow over Margot and Nicu's marriage.

Lord Robert Harrison is a wealthy, arrogant founding member of the London bank where Liv used to work. He possesses compromising knowledge about Liv's online sex work, but he is also hiding his own illicit behavior involving minors. Liv targets him to secure the necessary funding for her suburban dream life.

Geri is Margot's talent agent who handles the lingering pieces of the former pop star's career. She acts as a blunt intermediary between Margot and her former bandmates, delivering the harsh reality that the other musicians do not want Margot participating in their upcoming reunion tour.

Warren is an older teenager from Margot's past who associates with a dangerous local gang. He supplies drugs to a younger Margot and her friend Jenny. He is deeply involved in criminal activities and drives the events of a botched grocery store robbery that alters the course of several characters' lives.

Jenny is Margot's old school friend from their teenage years. She dates the older Warren and participates in the local party scene, consuming drugs supplied by him and Zain. She finds herself in over her head when a planned robbery goes disastrously wrong.

Zain is a member of the older gang of teenagers who supply drugs to Margot and Jenny. He participates in the supermarket break-in orchestrated by a local crime boss, acting as an accomplice in the escalating violence.

Eddie is a local crime boss revered by Warren and Zain. He assigns the gang a robbery at a local grocery store to collect a debt, setting off a chain of tragic events.

Roger Fenton is a detective investigating a series of connected deaths. Years ago, he dismissed an accusation regarding a violent crime, but recent discoveries lead him to reexamine the past. His investigation brings him to the suburban neighborhood, threatening the hidden secrets of its residents.

Navya is the deceased mother of an unnamed individual. Operating as an intrusive voice inside her child's head, she acts as a guiding force for vengeance. She harnesses her child's anger over her tragic murder, spurring them on to hunt down the guilty parties on a predetermined kill list.