The Closer alum, who starred in ABC's short-lived Ten Days in the Valley in the 2017-2018 season, will play a "Midwestern empty-nester who moves to Los Angeles and re-inserts herself into the lives of her adult children," per The Hollywood Reporter. "Sedgwick's Jean Raines is earthy, unfiltered and emotional. Born and raised in Iowa, she is practical and can’t be bothered with sugar coating. Very comfortable in her own skin, Jean is not a natural fit in the L.A. culture of anti-aging remedies and butt implants. She is a person that people confide in, except sometimes her own children. Jean is a fierce defender of her family and will stop at nothing to protect her connection to them. The sudden loss of her husband has left her a tad neurotic when it comes to worrying about the well-being of the people she loves."