Sally Sparrow receives a cryptic message from the Doctor about a mysterious new enemy species that is after the TARDIS.
Episode rating
Cast of episode
6
2
- The Doctor
- Martha Jones
- Sally Sparrow
- Kathy Nightingale
- Larry Nightingale
- Malcolm Wainwright
- Billy Shipton
- Old Billy
- Ben Wainwright
- Banto
- Desk Sergeant
- Auton