Instruct: Classify Amazon reviews into positive or negative sentiment
Query: scary, creepy, disturbing, effective.

one of the most effectively scary films I have ever seen, (and I love horror movies). This movie doesn't rely on blood and gore as such, but rather psychological tension for its thrills.Good performances by David Caruso and Josh Lucas anchor this film and keep it realistic and believable. If you enjoyed "The Ring" and its atmospheric doom, then you'll enjoy this. Best watched with all the lights off in your house.