A surprisingly extremely scary film, but still does not reach full potential.
The story is generic, but effective if done correctly. It is about a guy who has two kids, and he thinks his apartment building is haunted by his wife that recently passed away. He hires a group of paranormal investigators to examine his apartment to see if, in fact, it is haunted. They set up cameras all around the apartment, and do other common ghost hunting tactics. Of course, they do find some paranormal activity is occurring in the apartment, but that's an obvious given. What makes this film so effective, is mostly the lighting. They make for some seriously creepy shots, and the anticipation is enormous. Unfortunately, the story unfolds rather slowly, which makes the film hard to pay 100% focus on sometimes. It's really sad, too. Because if you can get to the last half hour or so, then you're in for a real treat. There is even a twist involved. One that I somewhat saw coming, however.
Another thing that makes this movie great, and creepy is the acting. I do not know any of the actors involved, but while they may be slightly dull to watch in some areas, for the most part they are amazing. There are several shots where it is a single camera shot on just them, as they're explaining something, and the power and emotion some of them add to it, really add to the emotional aspect of the movie, making you care more for the characters, especially the father of the two children.
The screenwriting and directing is also pretty great. The timing on when they would have something creepy happen was perfect. Right when you least expect it, which I feel is part of the reason they make the film slow paced. It may be boring at times, but when it is scary, oh sh*t it is scary! I cannot really explain too much, without giving away some of the plot, but it is very eerie.
Visually, I think part of it is the poor camera quality that makes the movie less entertaining. The camera quality is not very high, but that is because they are not big, expensive cameras that the paranormal researchers have. It makes sense, but also can be slightly boring. However, even though it can make for an uninteresting film, visually, it often adds that eeriness that I was speaking of.
Overall, this is a great, creepy example of doing a first person "found footage" film, correctly. However, it does not reach it's full potential of being horrifying all the way through, which is why I cannot give the film more than 3.5 stars.