This document outlines some key conventions and elements of thriller films. It discusses how thrillers typically use tension music, diegetic sounds, and low-key lighting to create suspense. The antagonist is usually hidden at first but revealed over time while the protagonist is brave and risks themselves to save others. Common themes in thrillers include scaring audiences while keeping them engaged through suspense and mystery. Sound and editing techniques also make audiences want to see what happens to the protagonist.