Knock Knock
“One night can cost you everything.”
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.
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HBO Max
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Your rating
Your review
Cast
9 people
Keanu Reeves
Evan Webber
Known for
The Matrix
John Wick
Lorenza Izzo
Genesis
Known for
The Green Inferno
Penny Dreadful: City of Angels
Ana de Armas
Bel
Known for
Blade Runner 2049
Knives Out
Aaron Burns
Louis
Known for
The Green Inferno
The Stranger
Colleen Camp
Vivian
Known for
Die Hard: With a Vengeance
The House with a Clock in Its Walls
Ignacia Allamand
Karen Alvarado
Known for
El Reemplazante
The Green Inferno
Antonio Quercia
Uber Driver
Known for
No Filter
Sweet Family
Dan Baily
Jake
No other roles listed
Megan Baily
Lisa
No other roles listed
Eli Roth Director · Nicolás López Screenplay Guillermo Amoedo Screenplay
Worldwide gross $6.3M · Budget $2.5M · United States release October 9, 2015
Box office
Budget
$2,500,000
Worldwide gross
$6,341,684
Gross vs. budget
2.5×
Production
Sobras International Pictures
Production
UFA
Production
Black Bear Pictures
Production
Camp Grey
Production
Elevated Films
Production
Movie Trailer House
Production
Dragonfly Entertainment
Production
Voltage Pictures
Production
Lionsgate
Studio
Lionsgate Premiere
Production
Universum Film (UFA)
Production
Chile · Germany · United States · Israel
Produced in
Languages
Original language
English
Spoken on screen
English · Spanish
Release dates
United States · January 23, 2015
Premiere · Sundance Film Festival
United States · October 9, 2015
Theatrical
United States · October 14, 2025
Physical · 4K Ultra HD (Lionsgate Limited)
Argentina
September 10, 2015 · Theatrical
Australia
December 9, 2015 · Physical · DVD
Belgium
October 27, 2015 · Theatrical
Bosnia & Herzegovina
November 12, 2015 · Theatrical
Brazil
October 8, 2015 · Theatrical
Cambodia
October 8, 2015 · Theatrical
Canada
October 9, 2015 · Theatrical
Chile
September 23, 2015 · Theatrical
Colombia
June 26, 2015 · Theatrical
Czechia
January 20, 2016 · Physical
Denmark
March 10, 2016 · Physical
Ecuador
October 2, 2015 · Theatrical
Estonia
September 4, 2015 · Theatrical
Finland
November 4, 2015 · Premiere · Night Visions Film Festival
November 6, 2015 · Theatrical
France
September 5, 2015 · Premiere · Deauville Film Festival
September 23, 2015 · Theatrical
January 22, 2016 · Digital
March 8, 2016 · Physical · Blu-ray / DVD
November 1, 2021 · Digital · Prime Video
Germany
December 10, 2015 · Theatrical
Hong Kong SAR China
November 12, 2015 · Theatrical
India
October 29, 2015 · Theatrical
Indonesia
October 20, 2015 · Theatrical
Ireland
June 26, 2015 · Theatrical
Israel
December 3, 2015 · Theatrical
Italy
March 1, 2016 · TV · Canale 5
April 14, 2016 · Physical
Japan
June 11, 2016 · Digital
Latvia
September 4, 2015 · Theatrical
October 8, 2015 · Theatrical
Lithuania
September 3, 2015 · Theatrical
Mexico
September 11, 2015 · Theatrical
Netherlands
September 2, 2015 · Theatrical
January 15, 2016 · Physical · Blu-ray / DVD
November 28, 2017 · TV · RTL 7
Peru
June 26, 2015 · Theatrical
September 24, 2015 · Theatrical
Philippines
October 21, 2015 · Theatrical
Poland
June 26, 2015 · Theatrical
Portugal
September 13, 2015 · Premiere · MOTELX - Lisbon International Horror Film Festival
November 5, 2015 · Theatrical
Russia
November 12, 2015 · Theatrical
February 22, 2016 · Physical · DVD
Singapore
October 15, 2015 · Theatrical
South Africa
October 30, 2015 · Theatrical
South Korea
October 22, 2015 · Theatrical
Spain
October 29, 2017 · Theatrical
Taiwan
October 2, 2015 · Theatrical
Thailand
November 26, 2015 · Theatrical
Ukraine
November 12, 2015 · Theatrical
United Kingdom
June 26, 2015 · Theatrical
October 19, 2015 · Physical · Blu-ray / DVD
Uruguay
September 10, 2015 · Theatrical
Vietnam
November 6, 2015 · Theatrical
Some details come from TheTVDB.