Diane is a 2018 American drama film written and directed by Kent Jones in his narrative directorial debut. It stars Mary Kay Place in the title role, with Jake Lacy, Deirdre O'Connell, Andrea Martin, and Estelle Parsons in supporting roles. It revolves around a selfless woman whose unwavering service to others hides a lifelong secret.

Plot

Diane Rhodes is a sixtysomething widow living in Pittsfield, Massachusetts whose days are taken up through service to others. She makes a to-do list for her day, before delivering a casserole to friends, one of whom is recovering from a recent accident. She makes a brief stop to pick a teacher friend from school before delivering clean clothes to her adult son Brian. Brian, a heroin addict and alcoholic, lives in squalor with his likewise addict girlfriend Carla.