This document discusses conventions commonly found in thriller films. It explains that conventions are technical elements that signal to audiences that a film belongs to a specific genre, like using low lighting to create shadows. It then describes some key aspects of thrillers, including vital settings that add suspense, intelligent villains and vulnerable victims, and popular themes involving science experiments gone wrong, investigations, and haunted places. An example film, 28 Days Later, is discussed for its use of shadows to heighten fear and inclusion of real media to feel realistic.