For Grace, haunted by secret fears, the regular visit to her aged grandmother turns into a terrifying nightmare. But are the macabre events in that strange house reality, or the imaginings of somebody close to mental breakdown?
| Name | Type | Role | |
|---|---|---|---|
| George Collis | Guest Star | ||
| Rita Tushingham | Guest Star | ||
| Ronald Nunnery | Guest Star | ||
| Keith Barron | Guest Star | ||
| Arthur Hewlett | Guest Star | ||
| Hilda Barry | Guest Star |