For 14-year-old Benny, anything recorded on videotape is inherently better and more real than what he can see with his naked eyes. He is barely noticed by his professional parents and spends most of his time either viewing wild and violent films or looking at the view outside his window through his video camera.
One day, on a whim, he invites a girl to his house and coolly murders her while his video camera is rolling. Then he hides the body temporarily in his closet and goes off to a party.
The calm and unexcited way his parents discuss the situation when he explains it to him, using his video film to demonstrate, makes it clear that his own psychopathology has a long background in that of his parents.