Lottie is a 75-year-old woman residing in a seemingly peaceful retirement in Baycliff, Oregon. Formerly known as Lorena Mae Lansdale, she changed her name decades ago to escape media scrutiny surrounding a string of unsolved murders in Spokane. Behind her carefully constructed facade of a frail, church-going grandmother who relies on a walker and compression socks, she possesses a sharp, calculating mind and a ruthless instinct for self-preservation. She actively resents societal judgments regarding age and gender, frequently utilizing others' underestimation of her as a strategic advantage.

Archie is Lottie’s adult son and a successful lawyer living in California. He grew up enduring intense bullying due to his mother's media exposure in 1985, which fostered an unwavering loyalty to her and a belief in her innocence. Despite his professional achievements, he frequently demonstrates poor judgment in his personal life, a trait his mother continuously monitors from afar.

Burke is an elderly, retired Spokane police detective who investigated Lottie under her original name forty years ago. Now confined to a wheelchair, his inability to prove her guilt during his career has calcified into a lifelong obsession. He closely monitors developments in Baycliff from afar, determined to secure a long-delayed victory.

Plum is a young, ambitious docuseries producer who focuses on cases of the wrongfully accused. She tracks Lottie down in Baycliff with the intent of exposing the 1985 Spokane murders to a modern audience. Driven by professional ambition, she operates with a high degree of confidence and actively dismisses Lottie's boundaries.

Kelsie is a sharp, perceptive Salem Police Detective tasked with investigating a local disappearance. She quickly identifies inconsistencies in witness statements and conducts unauthorized surveillance on her days off. Financially burdened by her grandmother's expensive nursing home care, she views police work through an increasingly cynical lens.

Norma is Plum's 51-year-old estranged mother who travels to Baycliff seeking answers. Inconsistently employed and active on social media, she exhibits erratic and emotional behavior, often exacerbated by alcohol use. Her desperate search for the truth makes her a highly unpredictable presence in the community.

Sheila is a fellow retiree and one of Lottie’s closest friends within the local church community. She enjoys testing potluck recipes and routinely checks in on Lottie’s health and family updates. She functions as a stabilizing, ordinary presence in Lottie's heavily compartmentalized life.

Bonnie is a member of the First Covenant Church and part of Lottie's core social circle. She frequently shares her own family drama, particularly regarding her daughter, with the group. She notices subtle changes in Lottie's routine and behavior, prompting genuine worry for her friend's mental health.

Cole is Plum's devoted boyfriend who immediately begins tracking her movements when she fails to return home. His earnest search quickly draws the attention of local law enforcement, who view him with heavy suspicion due to a previous incident and past relationship dynamics.

Morgan is Archie's young fiancée who travels to Baycliff to finalize wedding venues and unexpectedly stays at Lottie's house. Initially dismissed by Lottie as just another of Archie's mistakes, Morgan reveals a shared sensitivity to being judged as an outsider due to the age gap in her relationship.

Rey is a Salem Police Detective and Kelsie Harlow's partner. He is thorough, often spending his nights off retracing timelines and reviewing physical evidence. He approaches witnesses with a professional, measured demeanor, making him a steady presence in the escalating investigation.

Pastor Doug leads the local church congregation that Lottie attends. He coordinates community events and occasionally checks on the spiritual and emotional well-being of his elderly attendees.

Glenda is the event coordinator for the church bingo nights. She is highly critical, frequently making judgmental remarks about others' contributions to the potlucks and monitoring church funds.

Gary is an abrasive man from Lottie's youth who openly mocked her for being single and childless. His dismissive attitude permanently altered the trajectory of Lottie's life.

Stephanie is Archie's ex-wife and the mother of his two children. She maintains a strained but functional line of communication with Lottie regarding childcare and wedding logistics.

Noah is Archie and Stephanie's son. He leaves voicemails for his grandmother and attends his father's wedding.

Olive is Archie and Stephanie's daughter and Lottie's granddaughter. She spends time with her extended family during wedding preparations.

Junior is Kenneth Burke's son. He acts as a physical operative for his father, executing surveillance and breaking into locations on his behalf, though he remains largely uninformed about the full scope of his father's plans.

Tom is the sales director at an upscale retirement community in Baycliff. He handles financial negotiations and relies on standard sales tactics to secure new residents.

Dr. Maraj is Lottie's physician who monitors her worsening health metrics. He repeatedly advises her to undergo hip surgery and adjust her blood pressure medication to manage her decline.

Jax is a predatory telemarketer who relies on aggressive and ageist tactics when speaking to elderly individuals on the phone.

Danielle is Bonnie's daughter. She operates with a cropped haircut and manages secretive activities across the street from a local motel, maintaining connections to law enforcement.