*****Spoilers herein*****What really scares you? Killer sharks, or maybe ghosts trying to bring back a message? Maybe a chainsaw wielding psychopath?Maybe. But those fears don't even compare to a horror which people dare not even speak of or consider--and that is the death of one's own child. "Pet Sematary" taps this base, primal adult fear, and then takes it to places that most could not bear to explore.I've read comments about this film that include poor acting, characters making stupid decisions, etc. I disagree. The acting is actually first rate for a film like this. Maybe it is impossible for many to imagine the desperation resulting from such a scenario. But the film's events are not only logical, they may be absolutely inevitable if such a scenario were possible. This is the true horror of "Pet Sematary": It isn't that pets and people come back from the dead as evil killers who hunt with knives and scalpels, it is that anyone who has lost a child could become so desperate as to commit the crimes that Louis Creed does. Despite warning, or even past history.The movie takes those willing to go with it to the depths of a desperate human heart. The heart of a protector trying to make up for not being able to protect. And the results are horrifying. In fact, when the film dives into slasher territory near the end, it's almost a letdown, although I believe it's perfectly logical how it got there.I am a true horror fan, and I contend that this is one of the scariest horror films ever made. If you don't think so, see it again after you have children.