John Luessenhop's sequel to 1974's 'Texas Chainsaw Massacre' has little to offer beyond gore.The best horror films are actually about something larger than the grim events that typically befall their characters. It's what makes Tobe Hooper's "Texas Chainsaw Massacre" films, George Romero's "Living Dead" movies or the more recent "House of the Devil" and "Let the Right One In" so powerful: They examine societal change and the fear of the other through a distorted lens.