A devoted father helps two stranded young women who knock on his door, but his kind gesture turns into a dangerous seduction and a deadly game of cat and mouse.


Eli Roth


Eli Roth (screenplay), Nicolás López (screenplay) | 3 more credits »
658 ( 307)





Cast overview:
Keanu Reeves ... Evan
Lorenza Izzo ... Genesis
Ana de Armas ... Bell
Aaron Burns Aaron Burns ... Louis
Ignacia Allamand ... Karen
Dan Baily Dan Baily ... Jake
Megan Baily Megan Baily ... Lisa
Colleen Camp ... Vivian
Antonio Quercia Antonio Quercia ... Uber Driver
Otto Otto ... Monkey


When a devoted husband and father is left home alone for the weekend, two stranded young women unexpectedly knock on his door for help. What starts out as a kind gesture results in a dangerous seduction and a deadly game of cat and mouse. A sexy new thriller from director Eli Roth and written for the screen by Eli Roth & Nicolás López & Guillermo Amoedo and story by Anthony Overman and Michael Ronald, KNOCK KNOCK stars Keanu Reeves as the family man who falls into temptation and Lorenza Izzo and Ana de Armas as the seductresses who wreak havoc upon his life, turning a married man's dark fantasy into his worst nightmare. Written by Lionsgate

Plot Summary | Plot Synopsis


One night can cost you everything See more »


Drama | Thriller

Motion Picture Rating (MPAA)

Rated R for disturbing violent behavior, strong sexual content, nudity and language | See all certifications »

Parents Guide:

View content advisory »

Did You Know?


Colleen Camp who plays Vivian in the movie played Donna in the original Death Game (1977). See more »


In the end credits, where the list of music used is shown, the song by Kiss is listed as "Detroit City Rock". Actually, it's called "Detroit Rock City". See more »


Evan Webber: You have your phone?
Genesis: Uh, yeah. Why?
Evan Webber: I can try and fix it.
Genesis: Really? Oh.
Evan Webber: My kid dropped mine in the tub, and you won't believe this but if you put it in rice, it kinda dries it out.
Genesis: That would be awesome!
Bel: Rice? Oh, my God, you're like a Mythbuster!
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References Fight Club (1999) See more »


Daddy Was Wrong
Composed by Ben Riesman
Performed by Les Fits
Courtesy of Ben Riesman
See more »

User Reviews

1 October 2020 | by ygqqaqoSee all my reviews

I read bad reviews, but finally gave it a watch and this movie stands on its own so well! I really don't understand the hate. The characters, style, hard bodies and sequences are so great. The actor and actresses did such a good job with their performance and bodies, it never feels forced. The plot is that special but that is kinda of the thing with these types of movies and in the end it really surprised and comes together in a great way. Very evocative women.

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Frequently Asked Questions

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USA | Chile | Israel


English | Spanish

Release Date:

9 October 2015 (USA) See more »

Also Known As:

Knock Knock See more »

Filming Locations:

Santiago de Chile, Chile See more »


Box Office


$2,500,000 (estimated)

Opening Weekend USA:

$18,623, 11 October 2015

Gross USA:


Cumulative Worldwide Gross:

See more on IMDbPro »

Company Credits

Show more on IMDbPro »

Technical Specs




Aspect Ratio:

2.39 : 1
See full technical specs »

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