The first Discworld novel, "The Colour of Magic", was published in hardback by Colin Smythe Ltd in 1983. The paperback edition was published by Corgi, an imprint of Transworld, in 1985. Pratchett's popularity increased when the BBC's "Woman's Hour" broadcast "The Colour of Magic" as a serial in six parts, and later "Equal Rites". Subsequently, the hardback rights were taken by the publishing house Victor Gollancz Ltd, which remained Pratchett's publisher until 1997, Colin Smythe having become Pratchett's agent. Pratchett was the first fantasy author published by Gollancz.