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The basic idea, a killer coming back from the dead as a guy made of sand in order to kill people again, isn't bad, and the movie has a few scary moments, but the effects are far from special. One of the effects that gets incredibly over-used happens whenever the killer turns into sand and defies gravity to pour himself up into air vents or whatever happens to be nearby. At first, it looks pretty cool, but if you turn your head upside down to watch the scene, it's pretty obvious how it was done, and the entire movie looks cheaper. If I remember right, there's a great plot twist towards the end, but it's too little, too late to save this movie. I don't recommend Sleepstalker.
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