The Super 8 footage are snuff films that are a large part of the plot. There are 6 films: Pool Party (1966), BBQ (1979), Lawn Work (1986), Sleepy Time (1998), Family Hanging Out (2011), and House Painting (2012). Each movie is labeled with an innocent title, and left somewhere in the open, enticing someone to watch. They all start out as a typical home movie, depicting a family having fun, but few minutes into each movie, it jump cuts to the murders of the families by an "unseen" individual. This unseen individual is the person filming. After the murders, Bughuul can be seen somewhere in the frame, lurking. The reason behind these movies is for Bughuul to take more souls. Since it is revealed later in the movie that Bughuul actually lives in these films, he needs them to be watched to be released.
Pool Party '66 is the earliest dated tape. In it, a family is seen, taped onto pool chairs with rope tied to the ends. An unseen figure pulls each rope, drowning the family. Bughuul can be seen in the water after the family is underwater.
In this tape, the family is chained inside their own car, which is parked in their own garage. The unseen figure, lights the car on fire, which incinerates the family. Bughuul can be spotted for a moment by the side of the car.
In this tape, a lawn mover being pushed by an unseen person is pushed up to a family's window, and a family can be seen watching TV. Then the film cuts to a family tied up on the ground being run over by an unseen person, killing them.
The events of this tape occurred in the house that the Oswalt family moves into. The end portion of this movie serves as the opening of the Sinister. In this home movie, four members of a family are tied to a tree branch with nooses, but their feet are on the ground. An unseen figure cuts another branch that was supporting the family, which pulls them upward, killing them. Bughuul can be seen in the bushes in the background of the last frame.
This tape is seen the box with the rest in the last scene of Sinister. Although the footage from this movie is not shown in the film, is can be surmised that it is of Ashley Oswalt killing her family with an axe, as Ashley can be seen filming with a Super 8 camcorder while preparing to cut her father. The movie may also include the paintings Ashley made out of her families blood in the hallway of their home. Along with the other children, as Ashley is seen watching Super 8 footage of said events.
Late in Sinister after Ellison destroys the tapes with fire, only to find them again, perfectly intact, he discovers a bag within the box labeled "Extended Cuts". This is when it is revealed that the "unseen" individuals were actually the "missing" children. In the extended endings each child comes into frame, moves close to the camera and silently holds one finger up to their mouth.