“The Night They Knocked” (*1/2 out of four) was a wooden, hollow horror thriller about a group of friends (Linnea Gregg, Jack Buckley, Mickey Roberts, and others) who gather at a mountain cabin for a weekend of fun when a sudden knock on the door interrupts their vacation and leads to a never-ending night of horror. Numerous and endless cliches abound. When all of a sudden did “The Strangers” become the eminent horror movie to rip off? Even so, this is a “knock” well worth not answering.