Auton attack!

Tags: Third Doctor, Autons, The Brigadier, Liz Shaw

Spearhead from Space, episode 3
17 January 1970

A formless, group-mind, the Nestene Consciousness arrived on Earth in a swarm of meteorite ‘energy units’. With an affinity for plastics, and an ability to animate plastic items, the Consciousness infiltrated a plastics factory, creating deadly Auton replicas to collect the energy units and take over the world.