Classic Who S2 • Serial 1 · (3 episodes)
Planet of Giants
The doors of the TARDIS open of their own accord just before it materialises, running out of control. On emerging, the travellers find the ship has been reduced in size and they are now only about an inch tall.
As tiny people, they stumble across a plot by a ruthless businessman, Forester, and his misguided scientist colleague, Smithers, to launch a new insecticide, DN6 — a product so destructive that it would kill not only those insects harmful to agriculture but also those vital to it.
3 Episodes:
When the TARDIS malfunctions and the doors open in the time vortex, the travellers and their Ship shrink to the size of insects. When they arrive on Earth, they uncover a murderous plot involving a new insecticide - but how can they stop the crime in their miniaturised condition ? (Originally broadcast in three parts.)
Ian and Barbara are accidentally taken into Smithers' laboratory and, while the Doctor and Susan face a hazardous journey to reach them, they witness the deadly effects of DN6 first hand.
The Doctor and his friends face a race against time to expose Forrester's plans and return to normal size before Barbara succumbs to the effects of DN6.