I expected torture porn.
Knowing The Last House On The Left was a 2009 remake of the Wes Craven's 1970s original, I anticipated gore, disturbing imagery and a hint of the supernatural. What I watched instead was a very interesting story--albeit with a moderate amount of gore and more than a fair share of disturbing imagery--of how regular folk might handle tragedy, crisis and heartbreak.
House tells a story of resilience and desperation. Young, athletic Mari fights evil while it stares her dead-on in the face, and her parents take up the fight when Mari can't continue. The movie is highly disturbing, but responsible in how scenes are presented. For example, a rape scene integral to the plot manages to be disturbing without being explicit.
I expected torture porn and a superficial plot. Instead, House is a compelling story with a watchable cast and satisfying ending.