As a culture, we tend to recycle our stories, and no, not always out of laziness or a need for one big opening weekend (though that plays an increasing part). No, the old and the familiar play out time and time again because their conflicts and themes resonate across generations, and because the scenario at hand might lend itself to more apt commentary as time passes and people change. In terms of genre, rarely does this seem more common than with tragedies, and in turn, horror films in particular have a habit of bringing the boogeymen back to haunt us. That's the reason zombies won't stay dead. That's the reason body snatchers insist on invading. And that might be the reason why a fourth incarnation of The Last House on the Left is now willing -- and able -- to force itself upon our collective conscience.