Instruct: Classify Amazon reviews into positive or negative sentiment
Query: If you like indie horror.....

This is a must-see. Totally original but draws comparisons with Kill List and Lars VonTrier's Antichrist. If you need a plot totally spelled out for you, this is not your film, but for those of us who like a little mystery and controversy, this is it! I'm watching it now for the 3rd time and I can't get over how good the acting is. The "found footage" genre is a little played out but it's a very small aspect of this movie. And despite the tag lines, it has nothing to do with exorcism or possession. This is a film about mental illness and abuse; subjects far scarier than the paranormal because they actually exist. Warning for those with sensitive ears: there is a high-pitched buzzing in several intense scenes and I assume the purpose is to raise the discomfort level. It was kind of painful to me but my male friends say they can't even hear it. Go figure.