A railway signalman tells a curious traveller how he is being troubled by a ghostly spectre that seems to predict calamity.
| Name | Type | Role | |
|---|---|---|---|
| Andrew Davies | Writer | ||
| Bernard Lloyd | Guest Star | ||
| Carina Wyeth | Guest Star | ||
| Denholm Elliott | Guest Star | ||
| Reginald Jessup | Guest Star | ||
| Lawrence Gordon Clark | Director |