Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A good sleeping pill

Wow. This is one slow movie. Flashbacks, flash forwards, horrible photography, low-key soundtrack, and mostly off-screen violence make for one dull serial killer flick. Actors are actually pretty good, but they are so soft-spoken and almost dazed half the time. This is a very slow ride and will require a lot of patience if you want to make it to the end, which is ridiculous and fairly predictable. Nothing scary here, folks. I would have welcomed an occasional scream, chase or exagerated musical note to wake me from my coma.