Lucie Miller returns to life on Earth after the Doctor’s apparent death, only to be pulled back into his orbit by an alien visitor. Her search leads to Orbis, a dying planet where the Doctor has been stranded for centuries.
| Name | Type | Role | |
|---|---|---|---|
| Laura Solon | Guest Star | Selta | |
| Katarina Olsson | Guest Star | The Headhunter | |
| Beth Chalmers | Guest Star | Selta |