For Parents - Important (Spoiler)

While the reviews, and wikipedia entries suggest this is a fairly simple creature feature it's a little more than that. The first people to encounter the monsters are two children, seperately, and the first one a small, perhaps only just a teenage, boy is shown just before being attacked. Given that all you see is his terror and then a cut-away you can briefly hope that he is ok, having escaped somehow, but the next scene shows his even younger sister going exploring in the basement for him, sees him being devoured, his skull a gaping wreck, and her horror. I stopped watching at this point; you might like to choose to not even start.