Your Sister's Sister Official Trailer [HD]: Mark Duplass, Emily Blunt and Rosemarie DeWitt
The official trailer for 'Your Sister's Sister' starring Mark Duplass, Emily Blunt and Rosemarie DeWitt. Iris (Blunt) invites her friend Jack (Duplass) to stay at her family's island getaway after the death of his brother. At their remote cabin, Jack's drunken encounter with Hannah (DeWitt), Iris' sister, kicks off a revealing stretch of days.
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