[ATTENTION: This review reveals content of the movie.]
This movie has no plot. The formulas used to create suspense are old and stale. The setups are totally unbelievable - who in their right mind would ask their sister to hang onto their heels and dangle them into an almost vertical shaft for the slim justification of seeing 4 feet further into a black hole when they expect that the murderer might return at any minute? You will get more enjoyment out of watching a $20 bill burn than of spending it on popcorn and this movie.

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