Violet is the 65-year-old matriarch of the Weston family, suffering from mouth cancer and an unmanaged substance abuse disorder. She lives in a stiflingly hot house in Pawhuska, Oklahoma, where she covers the windows with shades and duct tape to block out the world. Sharp-tongued and highly observant, she uses her verbal aggression and emotional manipulation to control her estranged family members when they return home.

The 69-year-old patriarch of the Weston family is an intellectual who published a celebrated poetry collection in the 1960s. He struggles with severe alcoholism, using books and liquor to detach himself from his toxic marriage. His sudden disappearance acts as the inciting incident that forces his estranged daughters to return to Oklahoma.

The oldest Weston daughter travels from Colorado following her father's disappearance. She faces a painful separation from her husband and struggles to enforce rules with her rebellious teenage daughter. Strong-willed and deeply affected by her upbringing, she actively fights to establish dominance over her mother.

The 44-year-old middle daughter works at a local college and is the only sibling who stayed in Oklahoma to care for their parents. She absorbs constant belittlement from her mother regarding her appearance and single status. Privately, she harbors plans to leave the state entirely and start fresh.

The youngest Weston daughter arrives from Florida, projecting an air of relentless optimism. She operates in a state of deliberate denial, eager to demonstrate that she finally has a perfect life after years of disastrous relationships. She desperately seeks validation from her cynical family members.

Violet's younger sister arrives at the Weston house with her husband Charlie to monitor the crisis. She shares her sister's brash communication style and tendency toward cruelty, directing relentless criticism at her 37-year-old son. She uses humor and aggression as shields against emotional vulnerability.

A young Cheyenne woman hired to cook, clean, and care for Violet. Having recently lost her father, she takes the job out of financial necessity. She lives in the sweltering attic and observes the Weston family's chaotic dynamics with quiet stoicism, refusing to be baited by their constant insults.

Mattie Fae's easygoing husband acts as a buffer within the hostile Weston environment. He attempts to diffuse arguments with gentle humor and patience. Unlike his wife, he offers unconditional support and warmth to his adult son, refusing to tolerate cruel behavior at the dinner table.

Barbara's husband is a college professor whose affair with a young student caused their current separation. He travels to Oklahoma to maintain family appearances during the crisis. His academic, emotionally detached communication style frequently infuriates his highly stressed wife.

Barbara and Bill's 14-year-old daughter projects an air of adult cynicism to cope with her parents' marital collapse. She smokes marijuana and consumes classic horror films to detach from the chaos around her. Despite her tough exterior and precocious vocabulary, she remains highly vulnerable to predatory adults.

Mattie Fae and Charlie's 37-year-old son struggles with chronic unemployment and deep insecurity. He frequently absorbs his mother's harsh insults and public mockery, causing him to appear incompetent. However, his sweet and sensitive nature brings out a gentler side in those who genuinely care for him.

Karen's fiancé is a smooth-talking businessman who accompanies her to the Weston home. He presents himself as a supportive partner, but his immediate and predatory focus on a young teenager exposes a highly dangerous nature beneath his polished veneer.

The local law enforcement officer handling the investigation into the missing patriarch. He is a former classmate of the Weston sisters and previously dated Barbara, bringing a mix of professional duty and nostalgic history into the volatile household.