Earth, 1964. An accident on landing has greatly reduced the TARDIS and the travellers in size. They come across a scheme run by Forester, a ruthless businessman and his misguided scientist colleague Smithers to launch a new insecticide which is capable of destroying the local ecology. Forester is prepared to commit murder to secure the success of this project, but the inch-high travellers face danger of another kind.
Elenco: William Hartnell , Patrick Troughton , Jon Pertwee , Tom Baker , Peter Davison , Colin Baker , Sylvester McCoy .