sentences:  Some of the initial opening script was retained for "An Unearthly Child" when Anthony Coburn was commissioned to write a replacement on 14 June 1963, though details like those about the Doctor's home were removed.Around early September 1963 the idea was given to Robert Gould to develop, referred to as the "miniscule" storyline, which was anticipated to be the fourth serial of the season, but this story was later dropped from this slot in January 1964 and Gould abandoned work on the story altogether a month later.In March 1964 the story idea was offered to writer Louis Marks and eventually became "Planet of Giants".