The document defines a thriller genre and its key elements. A thriller follows a classic structure of equilibrium, disequilibrium caused by an antagonist, then restored equilibrium. It focuses on the protagonist's battle against the antagonist to solve a mystery or catch the villain. Key conventions include low lighting, quick cuts, shadows, and diegetic sounds to build suspense. The protagonist is often a brave male hero seeking to restore order, while the antagonist has a hidden identity revealed throughout. Cinematography uses close-ups of the protagonist and quick cuts hiding the antagonist's identity. Editing employs jump cuts and cross-cutting to build suspense. Music and locations also create tension and establish the theme.