The Doctor has come face to face with a massive green creature. Adrasta goes into the mines to kill the monster. But everything is not as it appears…
| Name | Type | Role | |
|---|---|---|---|
| David Fisher | Writer | ||
| Philip Denyer | Guest Star | ||
| David Redgrave | Guest Star | ||
| Myra Frances | Guest Star | ||
| John Bryans | Guest Star | ||
| Tommy Wright | Guest Star | ||
| Christopher Barry | Director |