Keira Knightley, who also starred in “Pride and Prejudice,” plays Cecilia Tallis, a rich girl who discovers she is loved by and in love with Robbie (James McAvoy), the son of one of her family’s servants. Their furtive, ardent courtship is observed by Cecilia’s younger sister, Briony (played at 13 by the remarkably poised Saoirse Ronan — pronounced SEER-Sha), whose combination of precocity and confusion precipitates a household catastrophe.

在《傲慢与偏见》中担当角色的Keira Knightley扮演Cecilia Tallis，影片中这位富家小姐发现家仆的儿子Robbie(James McAvoy饰演）爱着自己，同时自己也爱上了他。Cecilia的妹妹Briony（由13岁的Saoirse Ronan饰演）发现了他们隐密的激情，也正是Briony的早熟和懵懂共同导致了这场家庭悲剧。