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Kerry Washington as Paige Alexander, a marriage and family therapist with a large Instagram following. Despite her vocation, she struggles with her personal relationships. Due to her father's frequent imprisonment, she was in and out of various foster homes. She lived with her father's girlfriend Nadine from ages 8–18. She often imagines herself interacting with her "inner child" during stressful situations. Jordyn McIntosh plays young Paige.
Delroy Lindo as Edwin Alexander, Paige's father who has been imprisoned for the past 17 years. He wants to reconcile with his daughter and make a life for himself on the outside. He is a good cook, but struggles to find employment due to his status as an ex-felon. He is a huge flirt and quite successful with the ladies.
Marque Richardson as Mal, Edwin's case worker. He becomes Paige's boyfriend for several episodes until she ends the relationship.
Faly Rakotohavana as Finneas "Finn" Alexander, Paige's teenage son. He is biracial and his father is not in his life. He's an introverted gamer with an interest in card games. He bonds with his grandfather despite his mother's objections.
Jee Young Han as Esti Nelson, Paige's foster sister from Pastor and Mrs. Nelson's home. She has a sassy "tell it like it is" personality and is often Paige's sounding board. She had been married and divorced three times.