I thought it was a good movie. The actors played possessed characters really well I thought. Many are possessed. It usually gets confused with mental illnesses. We put ourselves at risk of spirit attachment by being negative, depression, drugs, alcohol. Especially alcohol. Alcohol is a big permission slip for them to come in. Some spirits want complete control of us. Some just attach so they can feel their old pleasures again as a human. Like smoking a cigar or getting drunk, etc.
Peace