Planet of Giants

Planet of Giants is the first serial of the second season in the British science fiction television series Doctor Who. Written by Louis Marks and directed by Mervyn Pinfield and Douglas Camfield, the serial was first broadcast on BBC1 in three weekly parts from 31 October to 14 November 1964. In the serial, the First Doctor (William Hartnell), his granddaughter Susan Foreman (Carole Ann Ford), and her teachers Ian Chesterton (William Russell) and Barbara Wright (Jacqueline Hill) are shrunk to the size of an inch after the Doctor's time machine the TARDIS arrives in contemporary England.

The story's concept was first proposed as the first serial of the show's first season, but was rejected due to its technical complexity and lack of character development. When Marks was commissioned to write the script, he was inspired by Rachel Carson's 1962 environmental science book Silent Spring, the first major documentation on human impact on the environment. The story was originally written and filmed as a four-part serial, but later reduced to three parts; the third and fourth episodes were cut down to form a faster-paced climax. The serial premiered with 8.4 million viewers, maintaining audience figures throughout the three weeks. Retrospective response for the serial was mixed, with criticism directed at its story and characterisation despite praise for its ambition. It later received several print adaptations and home media releases.