The Spearhead from Space (TV Story)

Synopsis
the alien time traveller the Doctor (Peter Travers), now exiled to Earth by the Time Lords, joins Admiral Lethbridge-Stewart (Pat Harrington Jr.) of USED and the scientist Liz Shaw (Katherine Morris) to stop the incorporeal intelligence the Nestenes from colonising the planet through their use of the Autons, killer beings made of plastic which act as human duplicates and shop-window mannequins.
=== Plot ===
The Doctor collapses outside his TARDIS and is taken to TBD Hospital, where his unusual anatomy confuses the doctors.
Meanwhile, a meteorite shower falls on the English countryside, and a poacher discovers a mysterious plastic polyhedron at the crash site. Admiral Lethbridge-Stewart of USED is trying to recruit Dr. Elizabeth "Liz" Shaw as a scientific advisor to examine any meteorites for evidence of aliens. Shaw is sceptical of the Brigadier's concerns and resents being taken away from her research at Cambridge.
The plastic polyhedron is a power unit for a non-physical alien intelligence known as the Nestene Consciousness. Normally disembodied, it has an affinity for plastic, and is able to animate human replicas made from it, called Autons. The Nestene have taken over a toy factory in Epping, and plan to replace key government and public figures with Auton duplicates. The Auton in charge of the factory sends other, less human-looking, dummy-like Autons to retrieve the power units from USED and the poacher.
After recovering in hospital and avoiding being kidnapped by the Autons, the Doctor discovers that his TARDIS has been disabled by the Time Lords and he is trapped on Earth. Despite his recent change in appearance, he convinces Lethbridge-Stewart that he is the same man who helped to defeat the Yeti and the Cybermen. Together with Liz, he uncovers the Nestene plot, just as the Autons activate across Britain and begin killing. The Doctor assembles an electroshock device that he believes will disable them.
UNIT attacks the plastics factory, but the Autons are impervious to gunfire. The Doctor and Liz make their way inside and encounter a tentacled plastic host created by the Nestenes as the perfect form for the invasion. While the Doctor struggles with the creature, Liz uses the electroshock device to shut the creature down, the effect cascading to all other Autons.
The Admiral fears the Nestenes will return and asks for the Doctor's continued help. The Doctor agrees, albeit reluctantly, to join USED. In return, he requires facilities to help repair the TARDIS, and a car like the sporty antique roadster he commandeered during the adventure. At his insistence, Liz also stays on as his assistant.
Cast
* Doctor Who - Peter Graves
* Liz Shaw - Katherine Ross
* Brigadier Lethbridge-Stewart - Pat Harrington Jr. 
* Channing - Dabbs Greer
* Seeley - TBD
* Mullins - TBD
* Captain Munro - TBD
* Dr. Henderson - TBD
* Nurse - TBD
* Corporal Forbes - TBD
* Unit Officer - TBD
* Technician - TBD
* Wagstaffe - TBD
* 2nd reporter - TBD
* Major General Scobie - TBD
* Dr. Beavis - TBD
* Hibbert - TBD
* Ransome - TBD
* Meg - TBD
* Sergeant - TBD
* Attendant - TBD
=== Uncredited cast ===
Category:Episodes
Category:Season 7
Category:Third Doctor stories