Gothic fiction emerged in the late 18th century, blending supernatural elements with psychological depth. This genre, pioneered by Horace Walpole and refined by Ann Radcliffe, challenged Enlightenment rationalism and explored the darker aspects of human nature. Key elements include medieval settings, persecuted heroines, and mysterious events. Walpole's "The Castle of Otranto" established Gothic conventions, while Radcliffe's novels introduced the "explained supernatural" and complex female characters, shaping the genre's evolution and lasting cultural impact.