1. Different camera shots are used in opening sequences to set the scene and provide meaning, such as close-ups to focus on important props, medium shots to show a character's body language, and long shots to establish the setting.
2. Tracking, pan, tilt, and zoom shots are used to follow characters and show their facial expressions and reactions.
3. Cuts between scenes can increase tension by abruptly changing from calm to ominous settings.
4. Diegetic and non-diegetic sounds also build tension and signify danger, like phone rings or ominous music.
5. Mise-en-scene details like a character's clothes and home provide context about their wealth.