This week the second of two programmes about fear, why do some of us like to be frightened? Why, in a darkened cinema, do we enjoy and endure fear, horror and suspense? We'll delve into the human mind to find out.
We will also go behind the camera to learn how the film-makers manipulate our senses and play on our deepest, most primeval fears.
(Image of Janet Leigh Credit: Associated Press)
