Lynn Shelton had me at “Humpday,” the feature that introduced me to the intuitively funny filmmaker, who comes back strong with “Your Sister’s Sister,” opening in limited release Friday (6/15/12).

Working once again with Mark Duplass, Shelton brings Emily Blunt and Rosemarie DeWitt into the mix, in a story of unspoken and unintentional attraction. Shelton’s loose, natural approach to acting and scene structure is meant to be instinctive. And Shelton should definitely trust her instincts. (More…)