Pugsley McFly’s review published on Letterboxd:
Eli Roth is the director of this movie. And it is the least violent horror story of his I remember watching. He is more known for torture porn horror movies. Knock Knock leans more toward the porn than the torture. I would describe it more as softcore porn. As to why so many recognizable names are involved in this movie, I am not sure I would know the answer. The movie is so bad. But I will admit I only continued watching it because it features two hot women seducing Keanu Reeves. And this would be considered entertainment. Sigh.