A research team from an electronics company move into an old Victorian house to start work on finding a new recording medium. When team member Jill Greeley witnesses a ghost, team director Peter Brock decides not only to analyse the apparition, which he believes is a psychic impression trapped in a stone wall (dubbed a "stone tape"), but to exorcise it too - with terrifying results...
Did You Know?
Writer Nigel Kneale
based "Taskerlands" and the scientists who worked there on the BBC's research and development laboratory in an old country house at Kingswood Warren in Kingswood, Surrey. See more
Near the end of the film, as Jill climbs the staircase and holds the railing, you can see how the supposedly stone wall stretches where it's attached to the railing. See more
These walls are a lot older than the rest of the house. They've just been - built onto. In fact, they must have been knocked down and rebuilt and generally messed about a lot in the last thousand years. Oh, yes. The foundations might be Saxon.