Atonement is a 2007 film based on the novel of the same name by British author Ian McEwan, making atonement novel a popular tag.
The 2001 novel tells the story of a 13-year-old girl who witnesses a crime in 1935 and whose actions irrevocably change her life, as well as those of her sister and the son of the family's housekeeper. It won the 2001 Booker Prize for fiction and the 2002 National Book Critics Circle Award for fiction.
The film, starring Keira Knightley and James McAvoy, won and was nominated for numerous awards.