This document analyzes techniques used in thriller films. It discusses how lighting, camera angles, facial expressions, and scene setting are used to build suspense and mystery. Bright lighting on a character's face indicates their importance, while dark lighting shows a sinister or evil side. A woman being wrapped in cling film by her killer shows their obsession with cleanliness. Minimal lighting in a nighttime killing scene draws the audience in. Props like glass objects on a table foreshadow that someone may be killed with them.