To Kill a Mockingbird is set in the Southern United States during the 1930s, amidst the Great Depression and prevalent racial and gender prejudices. The story is narrated by Scout Finch, a young girl whose father, Atticus Finch, defends Tom Robinson, a black man falsely accused of raping a white girl. Key themes include the struggle against ignorance and evil, and the societal issues of race, class, and gender that shape the characters' lives and perspectives.