From visionary filmmaker M. Night Shyamalan comes a thriller about a tight-knit family who are taken hostage by four armed strangers while vacationing at a remote cabin. The visitors, led by Dave Bautista (Guardians of the Galaxy), demand that the young girl and her parents make an unthinkable choice: to save their family or save humanity.

Special Features:
- Features Dolby Vision and HDR10 for Brighter, Deeper, More Lifelike Color
- Deleted Scenes
- Chowblaster Infomercial - Extended
- Choosing Wisely: Behind the Scenes of Knock at the Cabin
- Tools of the Apocalypse
- Drawing a Picture
- Kristen Cui Shines a Light