When the TARDIS malfunctions, it and its travellers land on Earth at the size of insects. They uncover a murderous plot involving a new insecticide, but how can they stop the crime in their miniaturised condition?

Cast:William Hartnell, Carole Ann Ford, Jacqueline Hill, William Russell, Alan Tilvern, Frank Crawshaw,

Genre:Science Fiction, Adventure, Drama,

country:United Kingdom,

Production:BBC,