"The Heart of Midlothian" is a famous novel written by Sir Walter Scott in 1818. Set in Edinburgh, it tells the story of Effie Deans, a young woman who faces societal challenges and personal struggles. The narrative explores themes of love, justice, and the impact of social class. The title refers to a heart-shaped mosaic on the pavement outside St. Giles' Cathedral, symbolizing the heart of the city. This location is historically significant, as it marks the site of the Heart of Midlothian prison, which was notorious in the past. The novel remains a classic in Scottish literature.