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...

• BBC
• Michael Bryant
• Jane Asher
• Iain Cuthbertson
• Michael Bates
• Reginald Marsh
• Tom Chadbon
• John Forgeham
• Philip Trewinnard