My wife and I watched this on Amazon Prime - we went into it thinking it was a documentary on a real missing persons case - and it sold us on that and got us invested. By the end though, my poor wife was in a near panic attack because of how crazy it got and it was around that point when I realized "Oh, this is a found footage mockumentary type movie". She hates scary movies, so I'd have never managed to get her to watch it with me if I knew and told her it was a horror movie. Great movie though.