Some doors should never be opened.
| Cast |
Keanu Reeves, Lorenza Izzo, Ana de Armas, Aaron Burns, Ignacia Allamand |
| Director |
Eli Roth |
| Screenplay | Eli Roth, Nicolás López, Guillermo Amoeda, Anthony Overman, Michael Ronald Ross |
| Music | Manuel Riveiro |
| Cinematography | Antonio Quercia |
| Editing | Diego Macho Gómez |
| Sound formats | |
| Made in | 2015 |
| Produced by | Black Bear Pictures, Camp Grey, Dragonfly Entertainment, Elevated Films, Sobras International Pictures |
Official Site | IMDB page | CommonSenseMedia Report
Scroll down for embedded trailer
| Genre | Thriller |
| Language | Strong, frequent |
| Nudity | Mild impact, infrequent |
| Sex | None |
| Violence | Moderate impact |
| Prejudice | None |
| Blasphemy | None |
| Drug abuse | None |
| Comments | Contains scenes of sexual violence. |
| These details are supplied by the FPB. If you have a problem with any of the above, please take it up directly with the FPB. Read the Classification Guidelines. | |
| Suggested age limit 18 + |
Positive messages |
Positive role models |
Violence |
Sex |
Language |
Consumerism |
Drinking, drugs, smoking |
| Scale (Max) | 20 |  |
What the Critics say | ||
| Cape Argus / The Star John DeFore  Sexed-up hostage movie dangerously flirts with tedium. | 5 |  |
| Cape Times John DeFore Sadistic strangers. | 10 |  |
| Metacritic.com 22 critics | 11 |  |
| Rottentomatoes critics 55 critics | 10 | |
| Rottentomatoes tomatometer Tomatometer Knock Knock brings a lot of talent to bear on its satirical approach to torture horror, but not effectively enough to overcome its repetitive story or misguidedly campy tone. | 7 | |
| Movie Review Query Engine MRQE critics   | 11 | |
| CommonSenseMedia Staff evaluation Horrible home-invasion thriller from Eli Roth. | 2 | |
What the People say | ||
| Metacritic.com users 36 users | 10 | |
| Rottentomatoes users 4472 users | 7 | |
| Internet 17850 Netizens Knock knock most ridiculous movie of 2015 | 10 | |
Average .. 42% | 8 | |