In this heartfelt drama, Laura Linney delivers a powerful performance as Sammy, a single mother trying to navigate the challenges of raising her son while dealing with her own personal struggles. You Can Count on Me explores themes of family, love, and forgiveness, as Sammy's life is turned upside down when her estranged brother Terry, played by Mark Ruffalo, comes back into her life. Linney's portrayal of Sammy is both vulnerable and relatable, making this film a touching and emotional experience.