Addie is a 70-year-old widow living in Holt, Colorado, who has spent decades in the same house. She decides she is tired of the profound loneliness that strikes at night and refuses to live the rest of her life worrying about other people's opinions. She is forthright and practical, desiring connection over small-town conventions.

Louis is a retired high school English teacher who has lived near Addie for over 40 years. Widowed and living alone, he struggles with feelings of mediocrity and carries lingering guilt over past marital transgressions. Though initially cautious about neighborhood gossip, he finds himself drawn to Addie's proposal and the honest conversations it brings.

Gene is Addie's adult son, a furniture store owner dealing with a failing business and a rocky marriage. He grew up bearing the emotional weight of a family tragedy and his father's subsequent emotional distance. He relies on his mother for financial help but maintains a rigid, controlling attitude toward family matters.

Jamie is Gene's six-year-old son. Thrust into a new environment away from his parents, he initially suffers from separation anxiety, requiring lights on and an open door at night. He slowly gains confidence through outdoor activities and the steady attention of the adults around him.

Ruth is an 82-year-old resident of Holt who has outlived most of her friends. She relies on Addie for occasional help with errands but retains a sharp, unvarnished perspective on the town and its gossip. She observes Addie and Louis's developing arrangement with pragmatic encouragement.

Holly is Louis's adult daughter, who lives in Colorado Springs and works as a teacher. She is protective of her family's image and heavily influenced by the small-town rumors that filter back to her from old friends in Holt.

Carl is Addie's deceased husband, who worked in an insurance office in Holt. Following a family tragedy, he emotionally withdrew from his wife and son, maintaining a facade of normalcy for the public while their home life grew cold.

Diane was Louis's wife, a woman who valued her independence and a strong network of local friends. She stayed home to raise Holly and expected a conventional life, later suffering through Louis's infidelity before ultimately taking him back.

Connie was Addie and Carl's first child. She died at age 11 after running into the street during a childhood game, an event that fundamentally fractured the Moore family's emotional dynamics.

Tamara was an English teacher at the same high school as Louis. Her brief affair with him represented Louis's attempt to escape his predictable life, ending with mutual heartbreak and a lingering local scandal.

Dorlan is a local man in Holt who frequents the coffee spots. He serves as a mouthpiece for the town's rumor mill, confronting Louis with thinly veiled gossip about his arrangement with Addie.

Beverly is Gene's estranged wife and Jamie's mother. Her departure to California prompts Gene to send Jamie to live with Addie for the summer while the parents sort out their marital issues.

Bonny is a five-year-old rescue dog with a limp and missing toes from past neglect. She bonds quickly with Jamie, providing him with a sense of security and companionship that helps him sleep through the night.