Arriving on the planet amid the American Civil War, the physician and Amy must get yourself a posse together to greatly help them get an alien artefact that has fallen in to the clutches of the Confederate Army. The terraforming device is one of the Cei, a competition of invaders who plan to use it to carefully turn the planet into a brand-new home world. But neither the Army nor the aliens are keen to allow Doctor and his gang hinder their plans, and present chase across the Crazy West. The only hope of escape for the Doctor and friends is certainly to capture the 3.25 to Arizona and race along the newly-built transcontinental railroad… Written specially for audio by Oli Smith, and browse by Matt Smith, The Runaway Train features the physician as performed by Matt Smith in the acclaimed hit series from BBC Television.