Starring Katie Featherston and Micah Sloat as couples who become increasingly disturbed by what appears to be a demonic presence. Hoping to capture evidence of it on film, they set up video cameras in the house but are not prepared for the terrifying occurrences to followed.
It's this feeling of vulnerability that Peli's slow-burning supernatural chiller so effectively exploits, fashioning heart-stopping scares out of almost nothing.
It illustrates one of my favorite points, that silence and waiting can be more entertaining than frantic fast-cutting and berserk f/x. For extended periods here, nothing at all is happening, and believe me, you won't be bored.
Like legendary producer Val Lewton in the '40s, director Oren Peli, who shot Paranormal in seven days in his own home, understands that what's most frightening is what you don't see but merely suggested.
Peli teases the audience expertly. Scenes remain silent and still; not for long, but long enough to make you sweat. The terror of anticipation and its abrupt release, particularly in the final scene, is exhilarating.
Though it never poses a question more abstract than "Where's that scratching sound coming from?" Paranormal Activity is all about spiritual and ethical debts coming due.
Peli is to be congratulated for pulling off such an audacious project, but he needs a sharper sense of timing: The film's pacing is uneven, which weakens the suspense.