How does one begin to describe the banality of “Knock Knock”?
The premise of someone being taken hostage in a home by a couple of psychotic people was interesting back in 1997, when the quintessentially dark German director Michael Haneke tackled the idea. It was even passable 10 years later when Haneke decided to do an English-language remake with Tim Roth and Naomi Watts.
And there have been other decent home-invasion movies, going back to 1971’s “Straw Dogs” and 1964’s “Lady in a Cage.”
“Knock Knock” is a bit different, but not in any good way.