Many thanks to @MayMunich and @Ataevw for tweeting the links for Germany and Russia, respectively.
Knock Knock will be released in:
From IMDb, the film also has release dates in:
- UK on June 26, 2015
- Chile on August 13, 2015
- Latvia on October 9,2015
- Netherlands on December 4, 2015
From Naver, The film is scheduled to be released sometime in July 2015.