Silent House was a strange experience for me. Adam Trese and Eric Sheffer Stevens, who play the Father and Uncle respectively, are not particularly good actors (or, at least, their skills don't show through in this film). Add to that the fact that Trese (the father) looks like he can't be more than ten years older than Sarah, and Stevens looks to be the same age as her. Olsen may only be in her early twenties, but she doesn't look it.
The film is done in one 80 minute (give or take) shot, and the break down of my enjoyment of the film kind of went like this - I was interested for about the first twenty minutes. Then, the next forty minutes, my interest waned to the point of me feeling like the movie was going to end predictably, and I would be leaving the theater upset, but the last twenty minutes ended up being a bit of a surprise, which redeemed the film from being a total waste of time and money.