Atonement: Plot Summary

1. The novel begins in 1935, at the Tallis family estate in England.
2. Briony Tallis, a thirteen-year-old aspiring writer, prepares a play for her brother Leon's homecoming.
3. Briony witnesses a series of events between her older sister Cecilia and Robbie Turner, the son of the family's housekeeper.

4. She misinterprets a sexual encounter between Cecilia and Robbie at the fountain as an assault.
5. Later, Briony intercepts and reads a sexually explicit letter from Robbie to Cecilia, which further confirms her misconceptions.
6. That evening, Briony witnesses a sexual encounter between Robbie and Cecilia in the library and believes Cecilia is being attacked.

7. During a family dinner, the twins Jackson and Pierrot run away, causing a search party to form.
8. Briony stumbles upon her cousin Lola being assaulted in the dark and accuses Robbie of the crime, despite not seeing the assailant's face.
9. Robbie is arrested and sent to prison, devastating Cecilia, who maintains his innocence.

10. Robbie is released from prison to fight in World War II, serving in France as part of the British Expeditionary Force.
11. The narrative shifts to Robbie's perspective, detailing his harrowing experiences and his determination to return to Cecilia.
12. Briony, now eighteen, becomes a nurse in London to atone for her false accusation.
13. Briony attempts to make amends by visiting Cecilia and Robbie, who are now together, and offering to recant her testimony.
14. In the novel's final section, an elderly Briony reveals she has written the preceding story as an act of atonement.
15. Briony discloses that in reality, Robbie died at Dunkirk and Cecilia died in a bombing during the Blitz, and they never reunited.