This superb Doctor Who box set contains all four stories featuring the alien species the Sontarans. The Sontarans are the militaristic clone species from the planet Sontar who made their first appearance in 1973 in the Who serial "The Time Warrior". They are tipped to re-appear in the new fourth series of Doctor Who. Features four Sontaran stories: "The Time Warrior", "The Invasion Of Time", "The Two Doctors", and "The Sontaran Experiment".