The Doctor and Vicki encounter the Rills and learn the situation is more complex than they thought while Steven finds the Drahvins' hospitality ever more perilous.
| Name | Type | Role | |
|---|---|---|---|
| William Emms | Writer | ||
| Pepi Poupée | Guest Star | ||
| Stephanie Bidmead | Guest Star | ||
| Robert Cartland | Guest Star | ||
| Marina Martin | Guest Star | ||
| Bill Lodge | Guest Star | ||
| Susanna Carroll | Guest Star | ||
| Angelo Muscat | Guest Star | ||
| William Shearer | Guest Star | ||
| Derek Martinus | Director |