Finding themselves on the Ood-Sphere planet in the 42nd century, The Doctor and Donna discover the truth over the Ood's willingness to serve humankind.
Episode rating
Cast of episode
13
12
- Donna Noble
- The Doctor
- Mr Halpen
- Solana Mercurio
- Dr Ryder
- Commander Kess
- Mr Bartle
- Ood Sigma
- Rep
- The Ood
- Cyberman
- Rep #2
- Dalek
- Cyberman
- Ood
- Dalek
- Cured Patient