1972-12-25 • 1h 30m

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...

Directors

Peter Sasdy

Writters

Nigel Kneale

Editors

Nigel Kneale, Geoff Higgs