The trailer uses camera work, sound, mise-en-scene, and editing techniques to build tension and create an unsettling atmosphere for viewers. An establishing shot shows an idyllic neighborhood setting, foreshadowing that something bad will happen. Security camera footage depicts the violence of past Purges. As the night begins, alarms are activated and shutters close as the family prepares to defend against intruders. Masked intruders arrive at the house while dramatic music plays, placing the family in danger. Through these techniques, the trailer hints at the horror to come while heightening the viewers' anxiety.