As Ellison analyzes the films, he notices a recurring demonic figure named Bughuul (Mr. Boogie), who appears in the background of every movie. With help from a deputy (James Ransone) and a local professor, Ellison learns Bughuul is an ancient pagan deity who consumes children’s souls and uses a corrupted child to murder each family.
Sinister remains a modern horror milestone precisely because its scariest image isn’t the demon—it’s the idea that family movies are never safe to watch again.
The professor’s lecture on Babylonian demonology, which turns the supernatural into a Wikipedia entry.
In the attic, he finds a box of Super 8 home movies labeled with titles like “Pool Party,” “BBQ,” and “Lawn Work.” Each film depicts a family being brutally murdered in a different era and location. The final clip shows the same family he’s now investigating.