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...
| Writing | Nigel Kneale | Writer |
| Directing | Peter Sasdy | Director |
| Production | Innes Lloyd | Producer |
| Editing | Geoff Higgs | Editor |
| Costume & Make-Up | Odette Barrow | Costume Design |
| Costume & Make-Up | Maureen Winslade | Makeup Artist |
