The Time Warrior is the first serial of the 11th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 15 December 1973 to 5 January 1974. The serial introduced Elisabeth Sladen as new companion Sarah Jane Smith. It also marked the debut of the Sontaran race. The serial also introduces the name of the Doctor's home planet, Gallifrey.
In the serial, the Sontaran Commander Linx (Kevin Lindsay) crash-lands his spaceship in medieval England. He agrees to give futuristic weaponry to the warrior Irongron (David Daker) and his men, in exchange for Linx being given shelter to perform repairs on the damaged spaceship.
Plot
thumb|left|The Sontarans debuted in this serial, as shown here at the Doctor Who Experience.
In the Middle Ages, the bandit Irongron and his aide Bloodaxe, together with their rabble of criminals, find the crashed spaceship of a Sontaran warrior named Linx. The alien claims Earth for his Empire, then sets about repairing his ship, offering Irongron “magic weapons” that will make him a king in return for shelter. Linx sends himself forward to the 20th century and kidnaps scientists from a top secret scientific research complex, then hypnotises them into making repairs on his ship.
The Third Doctor and Brigadier Lethbridge-Stewart are investigating the disappearance of the scientists. The Doctor meets an eccentric scientist called Rubeish and journalist Sarah Jane Smith. Later that evening Rubeish disappears and the Doctor uses the data he has gathered to pilot the TARDIS back to the Middle Ages, not realising that Sarah has stowed away on board.
Sarah is captured and brought before Irongron, along with an archer, Hal, who has been sent to kill Irongron. The Doctor sets Hal and Sarah free and they head for Wessex Castle.
The next morning Irongron and his troops assault the castle using rifles supplied by Linx, but the attack is repelled by the Doctor's cunning. The failure further sours the relationship between Linx and Irongron.
The Doctor decides to lead an attack on Irongron's castle. He makes contact with Rubeish and finds the human scientists in a state of extreme exhaustion. Linx catches the Doctor in the laboratory once more, but this time is rendered immobile when, with the Doctor's guidance, a strike from Rubeish hits his probic vent – a Sontaran refuelling point on the back of their necks which is also their main weakness. Rubeish and the Doctor send the scientists back to the 20th century. Sarah now invites herself into Irongron's kitchen, using the opportunity to drug the food, thereby knocking out Irongron's men.
Linx determines his ship is repaired enough to effect a departure. A crazed and half drugged Irongron arrives and accuses Linx of betraying him; the Sontaran responds by killing him and is in turn shot by Hal. Linx falls dead over his controls, triggering the launch mechanism. Knowing the place is about to explode when the shuttle takes off, Hal awakes Bloodaxe, who rouses the remaining men and tells them to flee, while the Doctor hurries the last of his allies out of the castle. It explodes moments before the Doctor and Sarah depart in the TARDIS.
Production
Working titles for this story included The Time Fugitive and The Time Survivor. The original outline for the serial was humorously submitted to the production office in the form of a "Field report from Sontaran Field Marshal Hol Mes, to Terran Cedicks".
Location shooting of both Wessex Castle and Irongron's castle was done at Peckforton Castle, in Cheshire, utilising different views.
The serial also stars Kevin Lindsay as Commander Linx. Lindsay reappeared as Cho-je in Jon Pertwee's last episode, Planet of the Spiders, and again as two Sontarans in Tom Baker's third story The Sontaran Experiment.
The story introduces a new opening sequence that includes a slit-scan "time tunnel" effect. It also introduces a new, diamond-shaped logo. These remained in use until 1980. This is the first story in the series history to refer to each segment as a 'Part' rather than 'Episode'. This remained until the end of the classic series with the exception of Destiny of the Daleks.