If there is one improvement I want from IMDb, it's the rating system. Instead of a 1 for the lowest, least-likable film, I think IMDb should have 0 as the lowest. Because there are just too many films nowadays that don't deserve even 1 star. This film is one good example.
The film is flimsy, the acting is fake and unbelievable, and it's definitely not something you would want to waste your free time watching.
The school kids got killed systematically by a wretched butcher who goes around knocking (mind you, the killer's pretty polite) and then stabs you to death. We've got so much to fear nowadays, what's with the global warming and all, and having a fear of checking out who knocks on your door just seems ridiculous.
Verdict : Avoid at all cost .