You might also consider 'Anna Karenina'. Tolstoy tells the story of a married woman's affair and the consequences it has on her life and the lives of those around her. The novel is known for its vivid characters and examination of love, marriage, and society in 19th - century Russia.
Another option is 'Crime and Punishment' by Fyodor Dostoevsky. This novel delves into the psychological turmoil of the protagonist after committing a crime, exploring themes of morality, guilt, and redemption. It's a very intense and thought - provoking read.