I was wandering through the library shelves when I picked up Ian McEwan's Atonement. I didn't know what it was about, but I remember it was adapted into a movie with Keira Knightly and Saoirse Ronan that I had meant to watch for quite some time, so I read it. And I loved it which is why I was no longer sure I wanted to see Joe Wright's Atonement.
The story opens in 1935 when a 13-year-old aspiring writer and playwright, Briony (Saoirse Ronan), witnesses an act she doesn't fully understand, the long-time family servant, Robbie Turner (James McAvoy), making love with her older sister, Cecilia (Keira Knightley). Later on, she becomes the witness of a crime she doesn't understand but she thinks she does and falsely accuses Robbie because of what she had seen earlier. This accusation of hers tears apart the two lovers, maybe forever as Robbie is sent to serve the army in WWII. Five years later, a grown-up Briony (Romola Garai), aware of the damage she has caused, tries to make amends for it.