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?

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Main Cast: William Hartnell, Carole Ann Ford, Jacqueline Hill, William Russell, Alan Tilvern, Frank Crawshaw, Reginald Barratt, Rosemary Johnson, Fred Ferris

Directors: Douglas Camfield, Mervyn Pinfield

Writer: Louis Marks

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Cinematographer:

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