7/13 The Doctor investigates a strange satellite, and Adam's skills as an assistant are tested.
6/13 The Doctor and Rose discover the Time Lords' deadliest enemy beneath Utah.
5/13 Time is running out for the Doctor as Downing Street announces an Interplanetary War.
4/13 Rose is taken home, but a spaceship crashes in the Thames and London is closed off.
3/13 Charles Dickens and the Doctor team up as corpses stalk the streets of Victorian Cardiff.