Motifs are recurring structures, contrasts, and literary devices that can help to develop and inform the text's major themes.
The forces of good and evil in To Kill a Mockingbird seem larger than the small Southern town in which the story takes place. Lee adds drama and atmosphere to her story by including a number of Gothic details in the setting and the plot. In literature, the term Gothic refers to a style of fiction first popularized in eighteenth-century England, featuring supernatural occurrences, gloomy and haunted settings, full moons, and so on. Among the Gothic elements in To Kill a Mockingbird are the unnatural snowfall, the fire that destroys Miss Maudie’s house, the children’s superstitions about Boo Radley, the mad dog that Atticus shoots, and the ominous night of the Halloween party on which Bob Ewell attacks the children. These elements, out of place in the normally quiet, predictable Maycomb, create tension in the novel and serve to foreshadow the troublesome events of the trial and its aftermath.
Counterbalancing the Gothic motif of the story is the motif of old-fashioned, small-town values, which manifest themselves throughout the novel. As if to contrast with all of the suspense and moral grandeur of the book, Lee emphasizes the slow-paced, good-natured feel of life in Maycomb. She often deliberately juxtaposes small-town values and Gothic images in order to examine more closely the forces of good and evil. The horror of the fire, for instance, is mitigated by the comforting scene of the people of Maycomb banding together to save Miss Maudie’s possessions. In contrast, Bob Ewell’s cowardly attack on the defenseless Scout, who is dressed like a giant ham for the school pageant, shows him to be unredeemably evil.