I really enjoyed the first hour and appreciated that the director went for the drama than overtly cheap scares. The actors are really good and the dysfunctional family angle works pretty well. It is a shame that the last 30 minutes tries too hard to push the movie into tedious horror tropes and plotting resulting in a really bad ending with crappy effects. Shame!
I could see why the producers thought that this has potential. It has every element a horror movie had It's somewhere in the writing (the ending), the directing, and the editing DARKENED the potential.