In the end, it turns out nearly everyone in this movie is just kind of an asshole, and I didn't care enough about any of them to write a serious review.
This is supposedly a loose remake or inspired by the 1985 film of the same title starring Klaus Kinski.
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The latter has inexplicably developed some Jason Bourne level killing skills, but he has an Achilles heel: his sensitive toes Achilles toes? The Gates family dream house turns quickly into a nightmare when their life is disturbed by the deranged previous owner who plots to retake his home and the Gates children for his own - hiding in the house attic and methodically taking out all those that stand in his way.