Four friends decide to ignore the warnings about their local woods and meddle with seemingly demonic forces in the hope to create a film about a local urban legend. But their dreams of discovering the truth behind what haunts the woods soon take a dark turn when only three return home. Because, when the hunters become the hunted, there's more to fear than just the dark. The Devil You Know is a spine-chilling horror bringing to light the darkest demons lurking in the shadows of the internet.