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Using simple practical effects—moving doors, footprints, and shadows.

The tension between Micah’s curiosity and Katie’s trauma. Paranormal_Activity_1_2007_HD_-_Altadefinizione01

The "demand it" campaign used real audience reaction footage. Using simple practical effects—moving doors

Before the big-budget sequels, the original film relied on raw, static security camera footage. This grounded the supernatural events in reality, making the audience feel like they were intruding on a private, deteriorating domestic life. the original film relied on raw