Your Sister's Sister (15)

Emily Blunt is Iris, who sends her best friend Jack (Mark Duplass) to her family holiday cabin for a restorative break after the death of his brother, Iris’ ex. At the cabin he finds Iris’s sister, Hannah, (Rosemary DeWitt) already there. She is fresh out of a seven year relationship and they bond over shared wounds and too much drink and end up taking things to the bedroom. When Iris arrives the next morning unexpectedly, a whole can of worms is opened up.