- Jodie Whittaker (The Doctor)
- Mandip Gill (Yasmin 'Yaz' Khan)
- John Bishop (Dan Lewis)
Episode: The Making of the Gunslinger (A Town Called Mercy Prequel)
Air Date: 2012-09-09
Runtime: 2 min
Civil war has ravaged the Kahler race, but a team of scientists has found an advantage. The Gunslinger is born.