- Jodie Whittaker (The Doctor)
- Mandip Gill (Yasmin 'Yaz' Khan)
- John Bishop (Dan Lewis)
Episode: The Infinite Quest
Air Date: 2007-06-30
Runtime: 45 min
The Tenth Doctor and Martha Jones set off on an adventure through space to find the datachips to unlock The Infinite, a huge spaceship that can grant people their heart's desire. However, the evil Baltazar is also searching for the ship.