The Doctor and Ace discover a stone spaceship underneath Warmsley's archaeological dig while Mordred summons Morgaine to Earth's dimension.
| Name | Type | Role | |
|---|---|---|---|
| Ben Aaronovitch | Writer | ||
| Dorota Rae | Guest Star | ||
| Angela Bruce | Guest Star | ||
| Ling Tai | Guest Star | ||
| James Ellis | Guest Star | ||
| Noel Collins | Guest Star | ||
| Stefan Schwartz | Guest Star | ||
| Marcus Gilbert | Guest Star | ||
| June Bland | Guest Star | Elizabeth Rowlinson | |
| Christopher Bowen | Guest Star | ||
| Michael Kerrigan | Director |