In the second episode of the six-part story "Dalek Invasion of Earth," the Doctor (William Hartnell) and Ian (William Russell) are captured by the Daleks, who rule the Earth of the 22nd century. Rescued by freedom fighters, the two time travelers learn of the plague that has enslaved all of humankind. As his other companions, Susan (Carole Ann Ford) and Barbara (Jacqueline Hill), spearhead an attack against the Daleks, the poor Doctor is recaptured and strapped to a Dalek operating table. Written by Terry Nation, "The Daleks" first aired on November 28, 1964. ~ Hal Erickson, Rovi