The Doctor and Romana are swept up in the political machinations of Tara. The Doctor must keep the android "king" running while Grendel plots to use Romana to destroy him.
| Name | Type | Role | |
|---|---|---|---|
| David Fisher | Writer | ||
| Paul Lavers | Guest Star | ||
| Lois Baxter | Guest Star | ||
| Martin Matthews | Guest Star | ||
| Neville Jason | Guest Star | ||
| Michael Hayes | Director |