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'Your Sister's Sister'
Logline: Still grieving the death of his brother, a man (Mark Duplass) hooks up with his sister-in-law's sister (Rosemarie DeWitt), and then the sister-in-law (Emily Blunt) shows up.
Plus: Strong indie cast could be appealing if well-executed.
Minus: Has the potential to fall into the sometimes tedious mumblecore movement.