This is a fantastic movie. It is not a big budget film, and it does not have a bunch of blood and guts or annoying cheerleaders. If you liked Paranormal Activity, I recommend this. I actually liked it better. At first the small-budget feel made me nervous, like maybe it wouldn't be worth my time, but it was well worth my time and I intend to watch it again and again.
The main character walks into his roommates’ room and finds that his roommate started a ceremony and left it in progress. His curiosity and disbelief in the paranormal leads him into the downward spiral that is the plot.