Reiterate that the film is a tragedy of errors fueled by imagination.
Set in 1935 England, the story follows 13-year-old Briony Tallis, an aspiring novelist with a vivid imagination. When she misinterprets a flirtatious encounter between her older sister, Cecilia (Keira Knightley), and the housekeeper’s son, Robbie Turner (James McAvoy), her subsequent false accusation sets off a tragic chain of events.