A year after the death of his brother Tom, Jack (Mark Duplass, Humpday, TV's The League) is having trouble coming to terms with his loss and has hit a wall, both personally and professionally. An intervention in the guise of his best friend (and Tom's ex-girlfriend) Iris (Emily Blunt, The Adjustment Bureau, Salmon Fishing in the Yemen) results in a planned week of solitude in the country at her family's cabin. No Internet, no TV, no contact. The problem is, Iris' sister Hannah (Rosemarie DeWitt, Rachel Getting Married, TV's Mad Men), raw from a breakup with her longtime girlfriend, had the same idea and she and Jack inadvertently have a night of drunken confessions and shared experiences. Things only get more muddled when Iris suddenly shows up the next morning, laying the groundwork for a more emotionally complicated few days than anyone had planned, but perhaps that they all needed.
With YOUR SISTER'S SISTER, director Lynn Shelton (Humpday, My Effortless Brilliance) and her exceptional all-star cast craft a touching, funny, and honest look at the complexities of adult human relationships.