I saw this movie at the video store and thought I would give it a try. The cover was pretty creepy and I had never heard of this movie before so I thought it might be okay. I was very wrong. The very first scene, contained a jump scene (which I did jump at), but it seems pretty unlikely that a burn victim would be so strong that he could punch his arm through a thick wooden door. The blood and gore was really cheap. The fading in and out thing was pretty annoying. Also, I am pretty sure that the camera work was done by someone who didn't know what they were doing. The script was horrible. Now the only thing that I actually kind of liked was the end (and not just because it was the end). I liked how they linked all the murders together by telling how Rico was burned and how Troy fitted in with everything. Now, this is a horrible movie, like literally one of the worst I have ever seen (and I sat through TWO Twilight movies!).

In Glass County, several teenagers from high-school are slaughtered and their severed bodies are found in the working place of their fathers. The retired detective Mike (Antonio Mastrantonio), who is the absent grandfather that is trying to approach to his granddaughter Nikki Reynolds (Joli Julianna), teams up with the inexperienced Detective Billie Vega (Kim Taggart) to help her in her investigation, where the slow janitor Troy (Sal Sirchia) is the prime suspect.The lame "Knock Knock" is a terrible movie: the story and the screenplay are ridiculously bad; the unconvincing acting is awful; the camera work is dreadful. The only thing that works is the cover of the DVD that induced me to buy it. My vote is three.Title (Brazil): Not Available

Knock Knock is a film that needs a chance. This is what is obviously going to earn hate. This movie seems confusing and according to other views, people don't really understand what is clearly put out there. This slasher focuses on a very dark origin for it's killer. The origin is sad and you feel sorry for him, which is a good thing.The lead of this film is not any kid, okay, it's pretty damn obvious the lead is the Killer or if not the cop. The Kids are just the kills that the killer comes back to do.Now when I watched this movie, I was confused at first and thought about turning it off, but please stick with it, as all the confusion fades and you get a crystal clear picture of why everything happens like it does.If you like movies souly for senseless kills, then I suggest you go find some other (horrible) horror film then. This is a film you have to think to understand, and a movie that doesn't make you think isn't worth anything.

In order to make this movie seem remotely watchable, I've added spoilers to the max, so if you don't want to know what happens you can stop reading now.This Knock Knock movie was seriously funny. The gore and killing were great, but the rest was just a very bad joke. The acting was horrendous. The starlets seem like strippers and the men look like the strip club owners. I'm not kidding. The men all speak with Brooklyn accents and look like mafia guys. The main detective was pretty ,but couldn't act herself out of a box. The story had some cool ideas. I'll mention those redeeming qualities.1. The beginning. Great 5 minutes of the movie. The guy knocks on the door and waits for the unsuspecting damsel to answer. He repeats this process 3 times and every time she opens the door , there is no one there. Finally she decides to catch the guy in the act by peeking through the peep hole, just as she does this, the killers' arm crashes through the door and grabs her. Even I jumped.2. The killings. Not only the gore, but also the way he props them for the parents to find. One girl is strapped to the shower and gutted. another is cut up into pieces and shoves into his Father's locker. There was no computer generated effects, so pretty good make up.3. This retarded janitor, who we meant to believe could be the killer , has all these Barbie dolls. He cuts off the faces off the students pictures and pastes them on to the dolls. Then he reenacts the murder seen, because fir some reason he always seems to be there, but he isn't the killer. If you have seen Maniac, you would appreciate this idea?These are the good parts. I would reedit this movie keep all those parts and cut out all the detective solving parts and especially the female detective and mafia fathers.I would probably add some more T&A and try to develop these characters at least to cardboard worthy personalities.Watch only if you like cool gory effects, otherwise...Fuggetaboutit.LOL!