Watch Sinister

"Sinister" (2012) is a slasher film about a family that moves into a house that was the site of a horrific murder. The father finds a bunch of snuff films with misleadingly innocent-sounding labels. A film of a family being burned alive, for example, is called "BBQ' 79." The father also notes a demonic figure in the films. This figure turns out to be a demon that possesses people and compels them to slaughter their own families.