Disc Information
| Studio | Lionsgate Home Entertainment |
| Catalog Number | 47808 |
| MPAA Rating | R |
| Rating Reason | Disturbing violent behavior, strong sexual content, nudity and language. |
| Retail Price | $19.99 |
| Disc Type | Single Side, Dual Layer (BD-50) |
| Running Time | 100 min |
| Color | Color |
| Chapters | Yes |
| Closed Captioned | Yes |
| Regional Coding | A |
| Release Date | 12/8/2015 |
Credits
| Director | Eli Roth |
| Screenplay | Subscribers only |
| Story | Subscribers only |
| Music | Subscribers only |
| Cinematography | Subscribers only |
| Production Design | Subscribers only |
| Costume Design | Subscribers only |
| Editor | Subscribers only |
| Sound Editor | Subscribers only |
| Re-Recording Mixer | Subscribers only |
| Executive Producer | Subscribers only |
| Producer | Subscribers only |
Audio & Video
| Aspect Ratio | Subscribers only |
| Measured Ratio | Subscribers only |
| Photography | Subscribers only |
| Disc Soundtrack | DTS HD High Resolution 5.1 |
| Theatrical Sound | Subscribers only |
| Subtitles | Subscribers only |
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Subscribe FreeKnock Knock is the story of Evan (Reeves), a man whose good intentions lead to deadly consequences when he helps two strangers (Izzo and Armas) who ask for his assistance. The devoted husband and father is left home alone for the weekend when he encounters two stranded young women, who 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. (Gary Reber)
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